Use ddcutil to manage monitor using DDC/CI protocol.
Installation
Use openSUSE Build Service to download ddcutil package.
Download package sing terminal.
$ wget https://download.opensuse.org/repositories/home:/rockowitz/xUbuntu_21.10/amd64/ddcutil_1.2.2-1_amd64.deb
Inspect downloaded package.
$ dpkg --info ddcutil_1.2.2-1_amd64.deb
new Debian package, version 2.0.
size 313476 bytes: control archive=1202 bytes.
827 bytes, 16 lines control
816 bytes, 12 lines md5sums
199 bytes, 7 lines * postinst #!/bin/sh
174 bytes, 5 lines * postrm #!/bin/sh
Package: ddcutil
Version: 1.2.2-1
Architecture: amd64
Maintainer: Sanford Rockowitz <rockowitz@minsoft.com>
Installed-Size: 796
Depends: libc6 (>= 2.34), libdrm2 (>= 2.4.66), libglib2.0-0 (>= 2.39.4), libi2c0 (>= 4.0), libkmod2 (>= 5~), libudev1 (>= 183), libx11-6, libxrandr2 (>= 2:1.2.99.2), pci.ids, usb.ids, usbutils, i2c-tools (>= 4.0)
Section: utils
Priority: optional
Homepage: https://www.ddcutil.com
Description: Query and change monitor settings - Standalone command line application
ddcutil is used to query and change monitor settings.
.
ddcutil communicates with monitors implementing MCCS (Monitor Control Command
Set). Normally, communication is performed using the DDC/CI protocol on the
I2C bus. Alternatively, communication can be performed over USB as per the
USB Monitor Control Class Specification.
Install downloaded package.
$ sudo dpkg --install ddcutil_1.2.2-1_amd64.deb
Install missing dependencies.
$ sudo apt --fix-broken install
Display usage information.
$ ddcutil --help
Usage:
ddcutil [OPTION?] command [arguments...] - DDC query and manipulation
Commands:
detect Detect monitors
capabilities Query monitor capabilities string
vcpinfo (feature-code-or-group) Show VCP feature characteristics
getvcp <feature-code-or-group> Report VCP feature value(s)
setvcp <feature-code> [+|-] <new-value> Set VCP feature value
dumpvcp (filename) Write color profile related settings to file
loadvcp <filename> Load profile related settings from file
scs Store current settings in monitor's nonvolatile storage
environment Probe execution environment
usbenv Probe for USB connected monitors
probe Probe monitor abilities
interrogate Report everything possible
chkusbmon Check if USB device is monitor (for UDEV)
Command Arguments
getvcp, vcpinfo:
<feature-code-or-group> can be any of the following:
- the hex feature code for a specific feature, with or without a leading 0x,
e.g. 10 or 0x10
- KNOWN - All features known to ddcutil that are valid for the display
- ALL - Same as KNOWN
- MCCS - Same as KNOWN
- SCAN - All feature codes 00..FF, except those known to be WO
- MANUFACTURER - Manufacturer specific codes
- MFG - Same as MANUFACTURER
- UDF - User defined features
- USER - User defined features
- PROFILE - Features for color profile management
- COLOR - Color related features
- LUT - LUT related features
- CRT - CRT related features
- AUDIO - Audio related features
- WINDOW - Window related features
- TV - TV related features
- DPVL - DPVL related features
- PRESET - Presets
- TABLE - Table type features
- SCONT - Simple Continuous features
- CCONT - Complex Continuous features
- CONT - All Continuous features
- SNC - Simple NC features
- CNC - Complex NC features
- NC_WO - Write-only NC features
- NC_CONT - NC features with continuous subrange
- NC - All NC features
Keywords can be abbreviated to the first 3 characters.
Case is ignored. e.g. "COL", "pro"
setvcp:
<feature-code>: hexadecimal feature code, with or without a leading 0x,
e.g. 10 or 0x10
[+|-] optionally indicate a relative value change, must be surrounded by blanks
<new-value>: a decimal number in the range 0..255, or a single byte hex value,
e.g. 0x80
Help Options:
-h, --help Show help options
Application Options:
-d, --display=number Display number
--dis=number Display number
-b, --bus=busnum I2C bus number
--hiddev=number hiddev device number
-u, --usb=busnum.devicenum USB bus and device numbers
-g, --mfg=mfg_id Monitor manufacturer code
-l, --model=model name Monitor model
-n, --sn=serial number Monitor serial number
-e, --edid=256 char hex string Monitor EDID
-U, --show-unsupported Report unsupported features
--no-table Exclude table type feature codes
--show-table Report table type feature codes
--rw Include only RW features
--ro Include only RO features
--wo Include only WO features
-v, --verbose Show extended detail
-t, --terse Show brief detail
--brief Show brief detail
--settings Show current settings
-V, --version Show ddcutil version
--ddc Report DDC protocol and data errors
-s, --stats=stats type Show performance statistics
--per-thread-stats Include per-thread statistics
--enable-usb Detect USB devices
--disable-usb Ignore USB devices (default)
--nousb Ignore USB devices (default)
--mccs=major.minor MCCS version
--timeout-i2c-io Wrap I2C IO in timeout
--force-slave-address Force I2C slave address
--verify Read VCP value after setting it
--noverify Do not read VCP value after setting it
--async Enable asynchronous display detection
--enable-capabilities-cache Enable cached capabilities (default)
--disable-capabilities-cache Disable cached capabilities
--udf Enable User Define Features (default)
--enable-udf Enable User Define Features (default)
--noudf Disable User Defined Features
--disable-udf Disable User Defined Features
--x52-no-fifo Feature x52 does have a FIFO queue
--maxtries=comma separated list Max try adjustment
--sleep-multiplier=number Multiplication factor for DDC sleeps
--less-sleep Eliminate some sleeps (default)
--sleep-less Eliminate some sleeps (default)
--enable-sleep-less Eliminate some sleeps (default)
--disable-sleep-less Do not eliminate any sleeps
--lazy-sleep Delay sleeps if possible
--dynamic-sleep-adjustment Enable dynamic sleep adjustment
--dsa Enable dynamic sleep adjustment
--edid-read-size=128,256 Number of EDID bytes to read
--excp Report freed exceptions
--trace=trace class name Trace classes
--trcfunc=function name Trace functions
--trcfile=file name Trace files
--timestamp Prepend trace msgs with elapsed time
--ts Prepend trace msgs with elapsed time
--wall-timestamp Prepend trace msgs with wall time
--wts Prepend trace msgs with wall time
--thread-id Prepend trace msgs with thread id
--tid Prepend trace msgs with thread id
--syslog Write trace messages to system log
--debug-parse Report parsed command
--failsim=control file name Enable simulation
--i1=non-negative number special
--f1 Special flag 1
--f2 Special flag 2
--f3 Special flag 3
--f4 Special flag 4
--f5 Special flag 5
--f6 Special flag 6
--s1=string Special string 1
--s2=string Special string 2
--s3=string Special string 3
--s4=string Special string 4
Monitor Selection:
The monitor to be communicated with can be specified using the following options:
--display <display_number>, where <display_number> ranges from 1 to the number of
displays detected
--bus <bus number>, for /dev/i2c-<bus number>
--usb <usb bus number>.<usb device number>, for monitors communicating via USB
--edid <hex string>, where <hex string> is a 256 hex character representation of the
128 byte first block of the EDID
--mfg <mfg_id>, where <mfg_id> is the 3 character manufacturer id reported by the EDID
--model <model_name>, where <model name> is as reported by the EDID
--sn <serial_number>, where <serial_number> is the string form of the serial number
reported by the EDID
Options --mfg, --model and --sn may be combined.
Trace by trace class:
The argument to --trace is a trace class. Specify the --trace option multiple
times to activate multiple trace classes, e.g. "--trace i2c --trace ddc"
Valid trace classes are: BASE, I2C, ADL, DDC, DDCIO, VCP, TOP, ENV, API, UDF, SLEEP, RETRY, ALL.
Trace class names are not case sensitive.
(Some trace classes are more useful than others.)
Trace by function name:
The argument to --trcfunc is a function name. Specify the --trcfunc option multiple
times to trace multiple functions, e.g. "--trcfunc func1 --trcfunc func2"
Trace by file name:
The argument to --trcfile is a simple file name. Specify the --trcfile option multiple
times to trace multiple functions, e.g. "--trcfile ddc_edid.c --trcfile ddc_output.c"
Stats:
The argument to --stats is a statistics class. Specify the --stats option multiple
times to activate multiple statistics classes, e.g. "--stats calls --stats errors"
Valid statistics classes are: TRY, TRIES, ERRS, ERRORS, CALLS, ALL.
Statistics class names are not case sensitive and can abbreviated to 3 characters.
If no argument is specified, or ALL is specified, then all statistics classes are
output.
Retries:
The argument to --maxtries is a comma separated list of 3 values:
maximum write-only exchange count
maximum write-read exchange count
maximum multi-part-read exchange count
A value of "0" or "." leaves the default value unchanged
e.g. --maxtries ".,.,15" changes only the maximum multi-part-read exchange count
Check utility version.
$ ddcutil --version
ddcutil 1.2.2 Built with support for USB connected displays. Built without function failure simulation. Built with libdrm services. Copyright (C) 2015-2021 Sanford Rockowitz License GPLv2: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Inspect environment
Display current environment.
$ sudo ddcutil environment
The following tests probe the runtime environment using multiple overlapping methods. *** Basic System Information *** ddcutil version: 1.2.2 /proc/version: Linux version 5.15.0-39-generic (buildd@lcy02-amd64-069) (gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #42-Ubuntu SMP Thu Jun 9 23:42:32 UTC 2022 Architecture: x86_64 Distributor id: Ubuntu Release: 22.04 Found a known architecture /proc/cmdline: BOOT_IMAGE=/boot/vmlinuz-5.15.0-39-generic root=UUID=dc759420-a88e-4743-96bb-a6049db4a8e0 ro quiet splash nvidia-drm.modeset=1 vt.handoff=7 *** Primary Check 1: Identify video card and driver *** Obtaining card and driver information from /sys... Primary video controller at PCI address 0000:01:00.0 (boot_vga flag is set) Device class: x030000 VGA compatible controller Vendor: x10de NVIDIA Corporation Device: x0ff3 GK107GL [Quadro K420] Subvendor/Subdevice: 10de/1106 NVIDIA Corporation Driver name: nvidia Driver version: 470.129.06 I2C device: i2c-15 name: NVIDIA i2c adapter 10 at 1:00.0 I2C device: i2c-13 name: NVIDIA i2c adapter 1 at 1:00.0 I2C device: i2c-14 name: NVIDIA i2c adapter 6 at 1:00.0 I2C device: i2c-12 name: NVIDIA i2c adapter 0 at 1:00.0 Secondary video controller at PCI address 0000:00:02.0 (boot_vga flag is not set) Device class: x038000 Display controller Vendor: x8086 Intel Corporation Device: x9bc8 CometLake-S GT2 [UHD Graphics 630] Subvendor/Subdevice: 17aa/3730 Lenovo Driver name: i915 Driver version: Unable to determine I2C device: i2c-3 name: i915 gmbus dpa I2C device: i2c-10 name: i915 gmbus tc5 I2C device: i2c-8 name: i915 gmbus tc3 I2C device: i2c-6 name: i915 gmbus tc1 I2C device: i2c-4 name: i915 gmbus dpb I2C device: i2c-11 name: i915 gmbus tc6 I2C device: i2c-9 name: i915 gmbus tc4 I2C device: i2c-7 name: i915 gmbus tc2 I2C device: i2c-5 name: i915 gmbus dpc *** Primary Check 2: Check that /dev/i2c-* exist and writable *** Current user: root (0) Checking /dev/i2c-* devices... Devices /dev/i2c-* must exist and the logged on user must have read/write permission for those devices (or at least those devices associated with monitors). Typically, this access is enabled by: - setting the group for /dev/i2c-* to i2c - setting group RW permissions for /dev/i2c-* - making the current user a member of group i2c Alternatively, this can be enabled by just giving everyone RW permission The following tests probe for these conditions. Checking for /dev/i2c-* devices... crw-rw---- 1 root i2c 89, 0 Jun 20 22:51 /dev/i2c-0 crw-rw---- 1 root i2c 89, 1 Jun 20 22:51 /dev/i2c-1 crw-rw---- 1 root i2c 89, 10 Jun 20 22:51 /dev/i2c-10 crw-rw---- 1 root i2c 89, 11 Jun 20 22:51 /dev/i2c-11 crw-rw---- 1 root i2c 89, 12 Jun 20 22:51 /dev/i2c-12 crw-rw---- 1 root i2c 89, 13 Jun 20 22:51 /dev/i2c-13 crw-rw---- 1 root i2c 89, 14 Jun 20 22:51 /dev/i2c-14 crw-rw---- 1 root i2c 89, 15 Jun 20 22:51 /dev/i2c-15 crw-rw---- 1 root i2c 89, 16 Jun 20 22:51 /dev/i2c-16 crw-rw---- 1 root i2c 89, 17 Jun 20 22:51 /dev/i2c-17 crw-rw---- 1 root i2c 89, 2 Jun 20 22:51 /dev/i2c-2 crw-rw---- 1 root i2c 89, 3 Jun 20 22:51 /dev/i2c-3 crw-rw---- 1 root i2c 89, 4 Jun 20 22:51 /dev/i2c-4 crw-rw---- 1 root i2c 89, 5 Jun 20 22:51 /dev/i2c-5 crw-rw---- 1 root i2c 89, 6 Jun 20 22:51 /dev/i2c-6 crw-rw---- 1 root i2c 89, 7 Jun 20 22:51 /dev/i2c-7 crw-rw---- 1 root i2c 89, 8 Jun 20 22:51 /dev/i2c-8 crw-rw---- 1 root i2c 89, 9 Jun 20 22:51 /dev/i2c-9 Current user (root) has RW access to all /dev/i2c-* devices. *** Primary Check 3: Check that module i2c_dev is loaded *** Checking for driver i2c_dev... sysfs reports module i2c_dev is NOT loaded. Module i2c_dev is built into the kernel *** Primary Check 4: Driver specific checks *** Performing driver specific checks... Checking for special settings for proprietary Nvidia driver (Needed for some newer Nvidia cards). grep: /etc/X11/xorg.conf: No such file or directory *** Additional probes *** Examining /sys/bus/i2c/devices... /sys/bus/i2c/devices/i2c-0/name: SMBus I801 adapter at efa0 /sys/bus/i2c/devices/i2c-1/name: Synopsys DesignWare I2C adapter /sys/bus/i2c/devices/i2c-2/name: Synopsys DesignWare I2C adapter /sys/bus/i2c/devices/i2c-3/name: i915 gmbus dpa /sys/bus/i2c/devices/i2c-4/name: i915 gmbus dpb /sys/bus/i2c/devices/i2c-5/name: i915 gmbus dpc /sys/bus/i2c/devices/i2c-6/name: i915 gmbus tc1 /sys/bus/i2c/devices/i2c-7/name: i915 gmbus tc2 /sys/bus/i2c/devices/i2c-8/name: i915 gmbus tc3 /sys/bus/i2c/devices/i2c-9/name: i915 gmbus tc4 /sys/bus/i2c/devices/i2c-10/name: i915 gmbus tc5 /sys/bus/i2c/devices/i2c-11/name: i915 gmbus tc6 /sys/bus/i2c/devices/i2c-12/name: NVIDIA i2c adapter 0 at 1:00.0 /sys/bus/i2c/devices/i2c-13/name: NVIDIA i2c adapter 1 at 1:00.0 /sys/bus/i2c/devices/i2c-14/name: NVIDIA i2c adapter 6 at 1:00.0 /sys/bus/i2c/devices/i2c-15/name: NVIDIA i2c adapter 10 at 1:00.0 /sys/bus/i2c/devices/i2c-16/name: AUX B/DDI B/PHY B /sys/bus/i2c/devices/i2c-17/name: AUX D/DDI D/PHY D /sys/bus/i2c/devices/0-0036/name: dummy /sys/bus/i2c/devices/0-0037/name: dummy /sys/bus/i2c/devices/0-0050/name: ee1004 Devices created by driver ddcci found in /sys/bus/i2c/devices Use ddcutil option --force-slave-address to recover from EBUSY errors. Env_Accumulator: architecture: x86_64 distributor_id Ubuntu Drivers detected: i915, nvidia /dev/i2c device numbers: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 sysfs_i2c_devices_exist: true /sys/bus/i2c device numbers: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 dev_i2c_devices_required: true module_i2c_dev_needed: true module_i2c_dev_builtin: true loadable_i2c_dev_exists: false i2c_dev_loaded_or_builtin: true group_i2c_checked: true group_i2c_exists: true dev_i2c_common_group_name: i2c all_dev_i2c_has_group_i2c: true any_dev_i2c_has_group_i2c: true all_dev_i2c_is_group_rw: true any_dev_i2c_is_group_rw: true cur_uname: root cur_uid: 0 cur_user_in_group_i2c: false cur_user_any_devi2c_rw: true cur_user_all_devi2c_rw: true Configuration suggestions: Current user has RW access to all /dev/i2c-N devices. Skipping further group and permission checks.
List connected monitors
Detect connected monitors.
$ sudo ddcutil detect
Display 1
I2C bus: /dev/i2c-12
EDID synopsis:
Mfg id: HPN
Model: HP X24c
Product code: 14226
Serial number: 1CR135172D
Binary serial number: 16843009 (0x01010101)
Manufacture year: 2021, Week: 35
VCP version: 2.2
$ sudo ddcutil detect --brief
Display 1 I2C bus: /dev/i2c-12 Monitor: HPN:HP X24c:1CR135172D
$ sudo ddcutil detect --verbose
Display 1
I2C bus: /dev/i2c-12
I2C address 0x50 (EDID) responsive: true
Is eDP device: false
Is LVDS device: false
/sys/bus/i2c/devices/i2c-12/name: NVIDIA i2c adapter 0 at 1:00.0
EDID synopsis:
Mfg id: HPN
Model: HP X24c
Product code: 14226
Serial number: 1CR135172D
Binary serial number: 16843009 (0x01010101)
Manufacture year: 2021, Week: 35
EDID version: 1.3
Extra descriptor:
Video input definition: 0x80 - Digital Input
Supported features:
DPMS active-off
Digital display type: RGB 4:4:4
Standard sRGB color space: False
White x,y: 0.313, 0.329
Red x,y: 0.664, 0.326
Green x,y: 0.295, 0.606
Blue x,y: 0.137, 0.082
Extension blocks: 1
EDID hex dump:
+0 +4 +8 +c 0 4 8 c
+0000 00 ff ff ff ff ff ff 00 22 0e 92 37 01 01 01 01 ........"..7....
+0010 23 1f 01 03 80 34 1d 78 2a 29 05 aa 53 4b 9b 23 #....4.x*)..SK.#
+0020 15 50 54 a1 08 00 d1 c0 a9 c0 81 c0 b3 00 95 00 .PT.............
+0030 81 00 81 80 01 01 02 3a 80 18 71 38 2d 40 58 2c .......:..q8-@X,
+0040 45 00 09 25 21 00 00 1e 00 00 00 fd 00 30 90 1e E..%!........0..
+0050 a7 23 01 0a 20 20 20 20 20 20 00 00 00 fc 00 48 .#.. .....H
+0060 50 20 58 32 34 63 0a 20 20 20 20 20 00 00 00 ff P X24c. ....
+0070 00 31 43 52 31 33 35 31 37 32 44 0a 20 20 01 1d .1CR135172D. ..
VCP version: 2.2
Controller mfg: Mstar
Firmware version: 1.0
Monitor returns DDC Null Response for unsupported features: false
Probe monitor abilities
Probe monitor abilities.
$ sudo ddcutil probe --display 1
EDID version: 1.3
Mfg id: HPN, model: HP X24c, sn: 1CR135172D
Product code: 14226, binary serial number 16843009 (0x01010101)
How display reports unsupported feature: DREF_DDC_USES_DDC_FLAG_FOR_UNSUPPORTED
Capabilities for display on bus /dev/i2c-12
Read cached capabilities string from /root/.cache/ddcutil/capabilities
Unparsed capabilities string: (prot(monitor)type(lcd)model(HP X24c)cmds(01 02 03 07 0C E3 F3)vcp(02 04 05 08 0B 0C 10 12 14(02 03 04 05 08 09 0B 0C 0D ) 16 18 1A 52 60(0F 11 ) 6C 6E 70 86(01 02 05) 87(01 02 03 04 05 06 07) AC AE B2 B6 C0 C6 C8 C9 CA(01 02) CC(01 02 03 04 05 06 08 0A 0D 14) D6(01 02 03 04 05) DA(00 02 ) DC (00 (00 10 13 14 15 17 1A 1D 1E ) 01 02 03) E0(02 (00 01 02) ) E1(02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 ) ) DF E6(00 01) E7(00 01) E8(00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86 ) E9(00 01) EA(00 01) EB(00 (00 01 02 03 04 ) ) DE(00 (00 01 06 07 ) ) ED(00 01) EE(01 02 03) EE(01 02 03) F4(00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F) ) FF)mswhql(1)asset_eep(40)mccs_ver(2.2))
Errors parsing capabilities string:
Feature ( (Invalid code)
Invalid VCP value in list for feature xe0: 02 (00 01 02)
Invalid VCP value in list for feature xe1: 02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 )
Invalid VCP value in list for feature xe8: 00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86
Invalid VCP value in list for feature xeb: 00 (00 01 02 03 04 )
Invalid VCP value in list for feature xde: 00 (00 01 06 07 )
Invalid VCP value in list for feature xf4: 00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F)
Model: HP X24c
MCCS version: 2.2
Commands:
Op Code: 01 (VCP Request)
Op Code: 02 (VCP Response)
Op Code: 03 (VCP Set)
Op Code: 07 (Timing Request)
Op Code: 0C (Save Settings)
Op Code: E3 (Capabilities Reply)
Op Code: F3 (Capabilities Request)
VCP Features:
Feature: 02 (New control value)
Feature: 04 (Restore factory defaults)
Feature: 05 (Restore factory brightness/contrast defaults)
Feature: 08 (Restore color defaults)
Feature: 0B (Color temperature increment)
Feature: 0C (Color temperature request)
Feature: 10 (Brightness)
Feature: 12 (Contrast)
Feature: 14 (Select color preset)
Values (unparsed): 02 03 04 05 08 09 0B 0C 0D
Values ( parsed):
02: Display Native
03: 4000 K
04: 5000 K
05: 6500 K
08: 9300 K
09: 10000 K
0b: User 1
0c: User 2
0d: User 3
Feature: 16 (Video gain: Red)
Feature: 18 (Video gain: Green)
Feature: 1A (Video gain: Blue)
Feature: 52 (Active control)
Feature: 60 (Input Source)
Values (unparsed): 0F 11
Values ( parsed):
0f: DisplayPort-1
11: HDMI-1
Feature: 6C (Video black level: Red)
Feature: 6E (Video black level: Green)
Feature: 70 (Video black level: Blue)
Feature: 86 (Display Scaling)
Values (unparsed): 01 02 05
Values ( parsed):
01: No scaling
02: Max image, no aspect ration distortion
05: Max vertical image with aspect ratio distortion
Feature: 87 (Sharpness)
Values (unparsed): 01 02 03 04 05 06 07
Values ( parsed): 01 02 03 04 05 06 07 (interpretation unavailable)
Feature: AC (Horizontal frequency)
Feature: AE (Vertical frequency)
Feature: B2 (Flat panel sub-pixel layout)
Feature: B6 (Display technology type)
Feature: C0 (Display usage time)
Feature: C6 (Application enable key)
Feature: C8 (Display controller type)
Feature: C9 (Display firmware level)
Feature: CA (OSD/Button Control)
Values (unparsed): 01 02
Values ( parsed):
01: OSD disabled, button events enabled
02: OSD enabled, button events enabled
Feature: CC (OSD Language)
Values (unparsed): 01 02 03 04 05 06 08 0A 0D 14
Values ( parsed):
01: Chinese (traditional, Hantai)
02: English
03: French
04: German
05: Italian
06: Japanese
08: Portuguese (Portugal)
0a: Spanish
0d: Chinese (simplified / Kantai)
14: Dutch
Feature: D6 (Power mode)
Values (unparsed): 01 02 03 04 05
Values ( parsed):
01: DPM: On, DPMS: Off
02: DPM: Off, DPMS: Standby
03: DPM: Off, DPMS: Suspend
04: DPM: Off, DPMS: Off
05: Write only value to turn off display
Feature: DA (Scan mode)
Values (unparsed): 00 02
Values ( parsed):
00: Normal operation
02: Overscan
Feature: DC (Display Mode)
Feature: E0 (Manufacturer specific feature)
Values (unparsed): 02 (00 01 02)
Values ( parsed): 02 01 (interpretation unavailable)
Feature: E1 (Manufacturer specific feature)
Values (unparsed): 02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 )
Values ( parsed): 02 03 01 02 03 04 05 06 04 0F 10 27 03 04 05 07 (interpretation unavailable)
Feature: DF (VCP Version)
Feature: E6 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: E7 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: E8 (Manufacturer specific feature)
Values (unparsed): 00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86
Values ( parsed): 00 01 02 03 01 02 03 04 05 06 80 81 82 83 84 85 86 (interpretation unavailable)
Feature: E9 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EA (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EB (Manufacturer specific feature)
Values (unparsed): 00 (00 01 02 03 04 )
Values ( parsed): 00 01 02 03 04 (interpretation unavailable)
Feature: DE (Scratch Pad)
Values (unparsed): 00 (00 01 06 07 )
Values ( parsed): 00 01 06 07 (interpretation unavailable)
Feature: ED (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EE (Manufacturer specific feature)
Values (unparsed): 01 02 03
Values ( parsed): 01 02 03 (interpretation unavailable)
Feature: EE (Manufacturer specific feature)
Values (unparsed): 01 02 03
Values ( parsed): 01 02 03 (interpretation unavailable)
Feature: F4 (Manufacturer specific feature)
Values (unparsed): 00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F)
Values ( parsed): 00 01 02 01 01 02 03 04 05 06 02 01 02 0A 01 0B 01 02 03 04 05 06 11 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E (interpretation unavailable)
Feature: FF (Manufacturer specific feature)
May support table reads: false
Scanning all VCP feature codes for display Display_Handle[i2c: fd=3, busno=12 @0x563d228d5d70]
VCP code 0x02 (New control value ): No new control values (0x01)
VCP code 0x03 (Soft controls ): Unsupported feature code
VCP code 0x07 (Unknown feature ): Unsupported feature code
VCP code 0x09 (Unknown feature ): Unsupported feature code
VCP code 0x0b (Color temperature increment ): 100 degree(s) Kelvin
VCP code 0x0c (Color temperature request ): 3000 + 35 * (feature 0B color temp increment) degree(s) Kelvin
VCP code 0x0d (Unknown feature ): Unsupported feature code
VCP code 0x0e (Clock ): Unsupported feature code
VCP code 0x0f (Unknown feature ): Unsupported feature code
VCP code 0x10 (Brightness ): current value = 100, max value = 100
VCP code 0x11 (Flesh tone enhancement ): Unsupported feature code
VCP code 0x12 (Contrast ): current value = 80, max value = 100
VCP code 0x13 (Backlight control ): Unsupported feature code
VCP code 0x14 (Select color preset ): User 1 (0x0b), Tolerance: Unspecified (0x00)
VCP code 0x15 (Unknown feature ): Unsupported feature code
VCP code 0x16 (Video gain: Red ): current value = 254, max value = 255
VCP code 0x17 (User color vision compensation): Unsupported feature code
VCP code 0x18 (Video gain: Green ): current value = 246, max value = 255
VCP code 0x19 (Unknown feature ): Unsupported feature code
VCP code 0x1a (Video gain: Blue ): current value = 253, max value = 255
VCP code 0x1b (Unknown feature ): Unsupported feature code
VCP code 0x1c (Focus ): Unsupported feature code
VCP code 0x1d (Unknown feature ): Unsupported feature code
VCP code 0x1e (Auto setup ): Auto setup not active (sl=0x00)
VCP code 0x1f (Auto color setup ): Unsupported feature code
VCP code 0x20 (Horizontal Position (Phase) ): current value = 0, max value = 100
VCP code 0x21 (Unknown feature ): Unsupported feature code
VCP code 0x22 (Horizontal Size ): Unsupported feature code
VCP code 0x23 (Unknown feature ): Unsupported feature code
VCP code 0x24 (Horizontal Pincushion ): Unsupported feature code
VCP code 0x25 (Unknown feature ): Unsupported feature code
VCP code 0x26 (Horizontal Pincushion Balance ): Unsupported feature code
VCP code 0x27 (Unknown feature ): Unsupported feature code
VCP code 0x28 (Horizontal Convergence R/B ): Unsupported feature code
VCP code 0x29 (Horizontal Convergence M/G ): Unsupported feature code
VCP code 0x2a (Horizontal Linearity ): Unsupported feature code
VCP code 0x2b (Unknown feature ): Unsupported feature code
VCP code 0x2c (Horizontal Linearity Balance ): Unsupported feature code
VCP code 0x2d (Unknown feature ): Unsupported feature code
VCP code 0x2e (Gray scale expansion ): Unsupported feature code
VCP code 0x2f (Unknown feature ): Unsupported feature code
VCP code 0x30 (Vertical Position (Phase) ): current value = 0, max value = 100
VCP code 0x31 (Unknown feature ): Unsupported feature code
VCP code 0x32 (Vertical Size ): Unsupported feature code
VCP code 0x33 (Unknown feature ): Unsupported feature code
VCP code 0x34 (Vertical Pincushion ): Unsupported feature code
VCP code 0x35 (Unknown feature ): Unsupported feature code
VCP code 0x36 (Vertical Pincushion Balance ): Unsupported feature code
VCP code 0x37 (Unknown feature ): Unsupported feature code
VCP code 0x38 (Vertical Convergence R/B ): Unsupported feature code
VCP code 0x39 (Vertical Convergence M/G ): Unsupported feature code
VCP code 0x3a (Vertical Linearity ): Unsupported feature code
VCP code 0x3b (Unknown feature ): Unsupported feature code
VCP code 0x3c (Vertical Linearity Balance ): Unsupported feature code
VCP code 0x3d (Unknown feature ): Unsupported feature code
VCP code 0x3e (Clock phase ): Unsupported feature code
VCP code 0x3f (Unknown feature ): Unsupported feature code
VCP code 0x40 (Horizontal Parallelogram ): Unsupported feature code
VCP code 0x41 (Vertical Parallelogram ): Unsupported feature code
VCP code 0x42 (Horizontal Keystone ): Unsupported feature code
VCP code 0x43 (Vertical Keystone ): Unsupported feature code
VCP code 0x44 (Rotation ): Unsupported feature code
VCP code 0x45 (Unknown feature ): Unsupported feature code
VCP code 0x46 (Top Corner Flare ): Unsupported feature code
VCP code 0x47 (Unknown feature ): Unsupported feature code
VCP code 0x48 (Top Corner Hook ): Unsupported feature code
VCP code 0x49 (Unknown feature ): Unsupported feature code
VCP code 0x4a (Bottom Corner Flare ): Unsupported feature code
VCP code 0x4b (Unknown feature ): Unsupported feature code
VCP code 0x4c (Bottom Corner Hook ): Unsupported feature code
VCP code 0x4d (Unknown feature ): Unsupported feature code
VCP code 0x4e (Unknown feature ): Unsupported feature code
VCP code 0x4f (Unknown feature ): Unsupported feature code
VCP code 0x50 (Unknown feature ): Unsupported feature code
VCP code 0x51 (Unknown feature ): Unsupported feature code
VCP code 0x52 (Active control ): Value: 0x14
VCP code 0x53 (Unknown feature ): Unsupported feature code
VCP code 0x54 (Performance Preservation ): Unsupported feature code
VCP code 0x55 (Unknown feature ): Unsupported feature code
VCP code 0x56 (Horizontal Moire ): Unsupported feature code
VCP code 0x57 (Unknown feature ): Unsupported feature code
VCP code 0x58 (Vertical Moire ): Unsupported feature code
VCP code 0x59 (6 axis saturation: Red ): Unsupported feature code
VCP code 0x5a (6 axis saturation: Yellow ): Unsupported feature code
VCP code 0x5b (6 axis saturation: Green ): Unsupported feature code
VCP code 0x5c (6 axis saturation: Cyan ): Unsupported feature code
VCP code 0x5d (6 axis saturation: Blue ): Unsupported feature code
VCP code 0x5e (6 axis saturation: Magenta ): Unsupported feature code
VCP code 0x5f (Unknown feature ): Unsupported feature code
VCP code 0x60 (Input Source ): HDMI-1 (sl=0x11)
VCP code 0x61 (Unknown feature ): Unsupported feature code
VCP code 0x62 (Audio speaker volume ): Unsupported feature code
VCP code 0x63 (Speaker Select ): Unsupported feature code
VCP code 0x64 (Audio: Microphone Volume ): Unsupported feature code
VCP code 0x65 (Unknown feature ): Unsupported feature code
VCP code 0x66 (Ambient light sensor ): Unsupported feature code
VCP code 0x67 (Unknown feature ): Unsupported feature code
VCP code 0x68 (Unknown feature ): mh=0x00, ml=0x05, sh=0x00, sl=0x00
VCP code 0x69 (Unknown feature ): Unsupported feature code
VCP code 0x6a (Unknown feature ): Unsupported feature code
VCP code 0x6b (Backlight Level: White ): Unsupported feature code
VCP code 0x6c (Video black level: Red ): current value = 50, max value = 100
VCP code 0x6d (Backlight Level: Red ): Unsupported feature code
VCP code 0x6e (Video black level: Green ): current value = 50, max value = 100
VCP code 0x6f (Backlight Level: Green ): Unsupported feature code
VCP code 0x70 (Video black level: Blue ): current value = 50, max value = 100
VCP code 0x71 (Backlight Level: Blue ): Unsupported feature code
VCP code 0x72 (Gamma ): Unsupported feature code
VCP code 0x73 (LUT Size ): Unsupported feature code (DDC NULL Message)
VCP code 0x74 (Single point LUT operation ): Unsupported feature code (DDC NULL Message)
VCP code 0x75 (Block LUT operation ): Unsupported feature code (DDC NULL Message)
VCP code 0x77 (Unknown feature ): Unsupported feature code
VCP code 0x78 (Display Identification Operation): Unsupported feature code (DDC NULL Message)
VCP code 0x79 (Unknown feature ): Unsupported feature code
VCP code 0x7a (Adjust Focal Plane ): Unsupported feature code
VCP code 0x7b (Unknown feature ): Unsupported feature code
VCP code 0x7c (Adjust Zoom ): Unsupported feature code
VCP code 0x7d (Unknown feature ): Unsupported feature code
VCP code 0x7e (Trapezoid ): Unsupported feature code
VCP code 0x7f (Unknown feature ): Unsupported feature code
VCP code 0x80 (Keystone ): Unsupported feature code
VCP code 0x81 (Unknown feature ): Unsupported feature code
VCP code 0x82 (Horizontal Mirror (Flip) ): Unsupported feature code
VCP code 0x83 (Unknown feature ): Unsupported feature code
VCP code 0x84 (Vertical Mirror (Flip) ): Unsupported feature code
VCP code 0x85 (Unknown feature ): Unsupported feature code
VCP code 0x86 (Display Scaling ): Max image, no aspect ration distortion (sl=0x02)
VCP code 0x87 (Sharpness ): current value = 4, max value = 7
VCP code 0x88 (Velocity Scan Modulation ): Unsupported feature code
VCP code 0x89 (Unknown feature ): Unsupported feature code
VCP code 0x8a (Color Saturation ): Unsupported feature code
VCP code 0x8c (TV Sharpness ): Unsupported feature code
VCP code 0x8d (Audio mute/Screen blank ): Unsupported feature code
VCP code 0x8e (TV Contrast ): Unsupported feature code
VCP code 0x8f (Audio Treble ): Unsupported feature code
VCP code 0x90 (Hue ): Unsupported feature code
VCP code 0x91 (Audio Bass ): Unsupported feature code
VCP code 0x92 (TV Black level/Luminesence ): Unsupported feature code
VCP code 0x93 (Audio Balance L/R ): Unsupported feature code
VCP code 0x94 (Audio Processor Mode ): Unsupported feature code
VCP code 0x95 (Window Position(TL_X) ): Unsupported feature code
VCP code 0x96 (Window Position(TL_Y) ): Unsupported feature code
VCP code 0x97 (Window Position(BR_X) ): Unsupported feature code
VCP code 0x98 (Window Position(BR_Y) ): Unsupported feature code
VCP code 0x99 (Window control on/off ): Unsupported feature code
VCP code 0x9a (Window background ): Unsupported feature code
VCP code 0x9b (6 axis hue control: Red ): Unsupported feature code
VCP code 0x9c (6 axis hue control: Yellow ): Unsupported feature code
VCP code 0x9d (6 axis hue control: Green ): Unsupported feature code
VCP code 0x9e (6 axis hue control: Cyan ): Unsupported feature code
VCP code 0x9f (6 axis hue control: Blue ): Unsupported feature code
VCP code 0xa0 (6 axis hue control: Magenta ): Unsupported feature code
VCP code 0xa1 (Unknown feature ): Unsupported feature code
VCP code 0xa3 (Unknown feature ): Unsupported feature code
VCP code 0xa4 (Window mask control ): Unsupported feature code (DDC NULL Message)
VCP code 0xa5 (Change the selected window ): Unsupported feature code
VCP code 0xa6 (Unknown feature ): Unsupported feature code
VCP code 0xa7 (Unknown feature ): Unsupported feature code
VCP code 0xa8 (Unknown feature ): mh=0x00, ml=0x03, sh=0x00, sl=0x00
VCP code 0xa9 (Unknown feature ): Unsupported feature code
VCP code 0xaa (Screen Orientation ): Unsupported feature code
VCP code 0xab (Unknown feature ): Unsupported feature code
VCP code 0xac (Horizontal frequency ): 1864 hz
VCP code 0xad (Unknown feature ): Unsupported feature code
VCP code 0xae (Vertical frequency ): 59.90 hz
VCP code 0xaf (Unknown feature ): Unsupported feature code
VCP code 0xb1 (Unknown feature ): Unsupported feature code
VCP code 0xb2 (Flat panel sub-pixel layout ): Red/Green/Blue vertical stripe (sl=0x01)
VCP code 0xb3 (Unknown feature ): Unsupported feature code
VCP code 0xb4 (Source Timing Mode ): Unsupported feature code (DDC NULL Message)
VCP code 0xb5 (Unknown feature ): Unsupported feature code
VCP code 0xb6 (Display technology type ): LCD (active matrix) (sl=0x03)
VCP code 0xb7 (Monitor status ): Unsupported feature code
VCP code 0xb8 (Packet count ): Unsupported feature code
VCP code 0xb9 (Monitor X origin ): Unsupported feature code
VCP code 0xba (Monitor Y origin ): Unsupported feature code
VCP code 0xbb (Header error count ): Unsupported feature code
VCP code 0xbc (Body CRC error count ): Unsupported feature code
VCP code 0xbd (Client ID ): Unsupported feature code
VCP code 0xbe (Link control ): Unsupported feature code
VCP code 0xbf (Unknown feature ): Unsupported feature code
VCP code 0xc0 (Display usage time ): Usage time (hours) = 7 (0x000007) mh=0xff, ml=0xff, sh=0x00, sl=0x07
VCP code 0xc1 (Unknown feature ): Unsupported feature code
VCP code 0xc2 (Display descriptor length ): Unsupported feature code
VCP code 0xc3 (Transmit display descriptor ): Unsupported feature code (DDC NULL Message)
VCP code 0xc4 (Enable display of 'display descriptor'): Unsupported feature code
VCP code 0xc5 (Unknown feature ): Unsupported feature code
VCP code 0xc6 (Application enable key ): 0x005a
VCP code 0xc7 (Unknown feature ): Unsupported feature code
VCP code 0xc8 (Display controller type ): Mfg: Mstar (sl=0x05), controller number: mh=0xff, ml=0x16, sh=0x00
VCP code 0xc9 (Display firmware level ): 1.0
VCP code 0xca (OSD/Button Control ): OSD enabled, button events enabled (sl=0x02), Power button enabled, power button events enabled (sh=0x02)
VCP code 0xcb (Unknown feature ): Unsupported feature code
VCP code 0xcc (OSD Language ): English (sl=0x02)
VCP code 0xcd (Status Indicators ): Unsupported feature code
VCP code 0xce (Auxiliary display size ): Unsupported feature code
VCP code 0xd0 (Output select ): Unsupported feature code
VCP code 0xd1 (Unknown feature ): Unsupported feature code
VCP code 0xd2 (Asset Tag ): Unsupported feature code (DDC NULL Message)
VCP code 0xd3 (Unknown feature ): Unsupported feature code
VCP code 0xd4 (Stereo video mode ): Unsupported feature code
VCP code 0xd5 (Unknown feature ): Unsupported feature code
VCP code 0xd6 (Power mode ): DPM: On, DPMS: Off (sl=0x01)
VCP code 0xd7 (Auxiliary power output ): Unsupported feature code
VCP code 0xd8 (Unknown feature ): Unsupported feature code
VCP code 0xd9 (Unknown feature ): Unsupported feature code
VCP code 0xda (Scan mode ): Normal operation (sl=0x00)
VCP code 0xdb (Image Mode ): Unsupported feature code
VCP code 0xdc (Display Mode ): Standard/Default mode (sl=0x00)
VCP code 0xdd (Unknown feature ): Unsupported feature code
VCP code 0xde (Scratch Pad ): Unsupported feature code
VCP code 0xdf (VCP Version ): 2.2
VCP code 0xe0 (Manufacturer Specific ): mh=0x00, ml=0x00, sh=0x00, sl=0x00
VCP code 0xe1 (Manufacturer Specific ): mh=0x00, ml=0x02, sh=0x00, sl=0x02
VCP code 0xe2 (Manufacturer Specific ): mh=0x00, ml=0x00, sh=0x00, sl=0x00
VCP code 0xe3 (Manufacturer Specific ): mh=0x00, ml=0x00, sh=0x00, sl=0x00
VCP code 0xe4 (Manufacturer Specific ): Unsupported feature code
VCP code 0xe5 (Manufacturer Specific ): Unsupported feature code
VCP code 0xe6 (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x01
VCP code 0xe7 (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x00
VCP code 0xe8 (Manufacturer Specific ): mh=0x00, ml=0x02, sh=0x00, sl=0x01
VCP code 0xe9 (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x01
VCP code 0xea (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x00
VCP code 0xeb (Manufacturer Specific ): mh=0x00, ml=0x04, sh=0x00, sl=0x01
VCP code 0xec (Manufacturer Specific ): Unsupported feature code
VCP code 0xed (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x01
VCP code 0xee (Manufacturer Specific ): mh=0x00, ml=0x03, sh=0x00, sl=0x02
VCP code 0xef (Manufacturer Specific ): Unsupported feature code
VCP code 0xf0 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf1 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf2 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf3 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf4 (Manufacturer Specific ): mh=0x00, ml=0x01, sh=0x00, sl=0x00
VCP code 0xf5 (Manufacturer Specific ): mh=0x00, ml=0x00, sh=0x00, sl=0x00
VCP code 0xf6 (Manufacturer Specific ): mh=0x00, ml=0x00, sh=0x00, sl=0x00
VCP code 0xf7 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf8 (Manufacturer Specific ): Unsupported feature code
VCP code 0xf9 (Manufacturer Specific ): Unsupported feature code
VCP code 0xfa (Manufacturer Specific ): Unsupported feature code
VCP code 0xfb (Manufacturer Specific ): Unsupported feature code
VCP code 0xfc (Manufacturer Specific ): Unsupported feature code
VCP code 0xfd (Manufacturer Specific ): Unsupported feature code
VCP code 0xfe (Manufacturer Specific ): Unsupported feature code
VCP code 0xff (Manufacturer Specific ): Unsupported feature code
Comparing declared capabilities to observed features...
Readable features declared in capabilities string: 02 0b 0c 10 12 14 16 18 1a 52 60 6c 6e 70 86 87 ac ae b2 b6 c0 c6 c8 c9 ca cc d6 da dc de df e0 e1 e6 e7 e8 e9 ea eb ed ee f4 ff
MCCS (VCP) version reported by capabilities: 2.2
MCCS (VCP) version reported by feature 0xDf: 2.2
Features declared as readable capabilities but not found by scanning:
Feature xde - Scratch Pad
Feature xff - Manufacturer Specific
Features found by scanning but not declared as capabilities:
Feature x1e - Auto setup
Feature x20 - Horizontal Position (Phase)
Feature x30 - Vertical Position (Phase)
Feature x68 - Unknown feature
Feature xa8 - Unknown feature
Feature xe2 - Manufacturer Specific
Feature xe3 - Manufacturer Specific
Feature xf5 - Manufacturer Specific
Feature xf6 - Manufacturer Specific
Color temperature increment (x0b) = 100 degrees Kelvin
Color temperature request (x0c) = 35
Requested color temperature = (3000 deg Kelvin) + 35 * (100 degrees Kelvin) = 6500 degrees Kelvin
List capabilities
Display monitor capabilities.
$ sudo ddcutil capabilities --display 1
Unparsed capabilities string: (prot(monitor)type(lcd)model(HP X24c)cmds(01 02 03 07 0C E3 F3)vcp(02 04 05 08 0B 0C 10 12 14(02 03 04 05 08 09 0B 0C 0D ) 16 18 1A 52 60(0F 11 ) 6C 6E 70 86(01 02 05) 87(01 02 03 04 05 06 07) AC AE B2 B6 C0 C6 C8 C9 CA(01 02) CC(01 02 03 04 05 06 08 0A 0D 14) D6(01 02 03 04 05) DA(00 02 ) DC (00 (00 10 13 14 15 17 1A 1D 1E ) 01 02 03) E0(02 (00 01 02) ) E1(02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 ) ) DF E6(00 01) E7(00 01) E8(00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86 ) E9(00 01) EA(00 01) EB(00 (00 01 02 03 04 ) ) DE(00 (00 01 06 07 ) ) ED(00 01) EE(01 02 03) EE(01 02 03) F4(00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F) ) FF)mswhql(1)asset_eep(40)mccs_ver(2.2))
Errors parsing capabilities string:
Feature ( (Invalid code)
Invalid VCP value in list for feature xe0: 02 (00 01 02)
Invalid VCP value in list for feature xe1: 02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 )
Invalid VCP value in list for feature xe8: 00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86
Invalid VCP value in list for feature xeb: 00 (00 01 02 03 04 )
Invalid VCP value in list for feature xde: 00 (00 01 06 07 )
Invalid VCP value in list for feature xf4: 00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F)
Model: HP X24c
MCCS version: 2.2
Commands:
Op Code: 01 (VCP Request)
Op Code: 02 (VCP Response)
Op Code: 03 (VCP Set)
Op Code: 07 (Timing Request)
Op Code: 0C (Save Settings)
Op Code: E3 (Capabilities Reply)
Op Code: F3 (Capabilities Request)
VCP Features:
Feature: 02 (New control value)
Feature: 04 (Restore factory defaults)
Feature: 05 (Restore factory brightness/contrast defaults)
Feature: 08 (Restore color defaults)
Feature: 0B (Color temperature increment)
Feature: 0C (Color temperature request)
Feature: 10 (Brightness)
Feature: 12 (Contrast)
Feature: 14 (Select color preset)
Values:
02: Display Native
03: 4000 K
04: 5000 K
05: 6500 K
08: 9300 K
09: 10000 K
0b: User 1
0c: User 2
0d: User 3
Feature: 16 (Video gain: Red)
Feature: 18 (Video gain: Green)
Feature: 1A (Video gain: Blue)
Feature: 52 (Active control)
Feature: 60 (Input Source)
Values:
0f: DisplayPort-1
11: HDMI-1
Feature: 6C (Video black level: Red)
Feature: 6E (Video black level: Green)
Feature: 70 (Video black level: Blue)
Feature: 86 (Display Scaling)
Values:
01: No scaling
02: Max image, no aspect ration distortion
05: Max vertical image with aspect ratio distortion
Feature: 87 (Sharpness)
Values: 01 02 03 04 05 06 07 (interpretation unavailable)
Feature: AC (Horizontal frequency)
Feature: AE (Vertical frequency)
Feature: B2 (Flat panel sub-pixel layout)
Feature: B6 (Display technology type)
Feature: C0 (Display usage time)
Feature: C6 (Application enable key)
Feature: C8 (Display controller type)
Feature: C9 (Display firmware level)
Feature: CA (OSD/Button Control)
Values:
01: OSD disabled, button events enabled
02: OSD enabled, button events enabled
Feature: CC (OSD Language)
Values:
01: Chinese (traditional, Hantai)
02: English
03: French
04: German
05: Italian
06: Japanese
08: Portuguese (Portugal)
0a: Spanish
0d: Chinese (simplified / Kantai)
14: Dutch
Feature: D6 (Power mode)
Values:
01: DPM: On, DPMS: Off
02: DPM: Off, DPMS: Standby
03: DPM: Off, DPMS: Suspend
04: DPM: Off, DPMS: Off
05: Write only value to turn off display
Feature: DA (Scan mode)
Values:
00: Normal operation
02: Overscan
Feature: DC (Display Mode)
Feature: E0 (Manufacturer specific feature)
Values: 02 01 (interpretation unavailable)
Feature: E1 (Manufacturer specific feature)
Values: 02 03 01 02 03 04 05 06 04 0F 10 27 03 04 05 07 (interpretation unavailable)
Feature: DF (VCP Version)
Feature: E6 (Manufacturer specific feature)
Values: 00 01 (interpretation unavailable)
Feature: E7 (Manufacturer specific feature)
Values: 00 01 (interpretation unavailable)
Feature: E8 (Manufacturer specific feature)
Values: 00 01 02 03 01 02 03 04 05 06 80 81 82 83 84 85 86 (interpretation unavailable)
Feature: E9 (Manufacturer specific feature)
Values: 00 01 (interpretation unavailable)
Feature: EA (Manufacturer specific feature)
Values: 00 01 (interpretation unavailable)
Feature: EB (Manufacturer specific feature)
Values: 00 01 02 03 04 (interpretation unavailable)
Feature: DE (Scratch Pad)
Values: 00 01 06 07 (interpretation unavailable)
Feature: ED (Manufacturer specific feature)
Values: 00 01 (interpretation unavailable)
Feature: EE (Manufacturer specific feature)
Values: 01 02 03 (interpretation unavaila
$ sudo ddcutil capabilities --display 1 --brief
Unparsed capabilities string: (prot(monitor)type(lcd)model(HP X24c)cmds(01 02 03 07 0C E3 F3)vcp(02 04 05 08 0B 0C 10 12 14(02 03 04 05 08 09 0B 0C 0D ) 16 18 1A 52 60(0F 11 ) 6C 6E 70 86(01 02 05) 87(01 02 03 04 05 06 07) AC AE B2 B6 C0 C6 C8 C9 CA(01 02) CC(01 02 03 04 05 06 08 0A 0D 14) D6(01 02 03 04 05) DA(00 02 ) DC (00 (00 10 13 14 15 17 1A 1D 1E ) 01 02 03) E0(02 (00 01 02) ) E1(02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 ) ) DF E6(00 01) E7(00 01) E8(00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86 ) E9(00 01) EA(00 01) EB(00 (00 01 02 03 04 ) ) DE(00 (00 01 06 07 ) ) ED(00 01) EE(01 02 03) EE(01 02 03) F4(00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F) ) FF)mswhql(1)asset_eep(40)mccs_ver(2.2))
$ sudo ddcutil capabilities --display 1 --verbose
Feature definition file not found: HPN-HP_X24c-14226.mccs
Read cached capabilities string from /root/.cache/ddcutil/capabilities
Unparsed capabilities string: (prot(monitor)type(lcd)model(HP X24c)cmds(01 02 03 07 0C E3 F3)vcp(02 04 05 08 0B 0C 10 12 14(02 03 04 05 08 09 0B 0C 0D ) 16 18 1A 52 60(0F 11 ) 6C 6E 70 86(01 02 05) 87(01 02 03 04 05 06 07) AC AE B2 B6 C0 C6 C8 C9 CA(01 02) CC(01 02 03 04 05 06 08 0A 0D 14) D6(01 02 03 04 05) DA(00 02 ) DC (00 (00 10 13 14 15 17 1A 1D 1E ) 01 02 03) E0(02 (00 01 02) ) E1(02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 ) ) DF E6(00 01) E7(00 01) E8(00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86 ) E9(00 01) EA(00 01) EB(00 (00 01 02 03 04 ) ) DE(00 (00 01 06 07 ) ) ED(00 01) EE(01 02 03) EE(01 02 03) F4(00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F) ) FF)mswhql(1)asset_eep(40)mccs_ver(2.2))
Errors parsing capabilities string:
Feature ( (Invalid code)
Invalid VCP value in list for feature xe0: 02 (00 01 02)
Invalid VCP value in list for feature xe1: 02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 )
Invalid VCP value in list for feature xe8: 00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86
Invalid VCP value in list for feature xeb: 00 (00 01 02 03 04 )
Invalid VCP value in list for feature xde: 00 (00 01 06 07 )
Invalid VCP value in list for feature xf4: 00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F)
Model: HP X24c
MCCS version: 2.2
Commands:
Op Code: 01 (VCP Request)
Op Code: 02 (VCP Response)
Op Code: 03 (VCP Set)
Op Code: 07 (Timing Request)
Op Code: 0C (Save Settings)
Op Code: E3 (Capabilities Reply)
Op Code: F3 (Capabilities Request)
VCP Features:
Feature: 02 (New control value)
Feature: 04 (Restore factory defaults)
Feature: 05 (Restore factory brightness/contrast defaults)
Feature: 08 (Restore color defaults)
Feature: 0B (Color temperature increment)
Feature: 0C (Color temperature request)
Feature: 10 (Brightness)
Feature: 12 (Contrast)
Feature: 14 (Select color preset)
Values (unparsed): 02 03 04 05 08 09 0B 0C 0D
Values ( parsed):
02: Display Native
03: 4000 K
04: 5000 K
05: 6500 K
08: 9300 K
09: 10000 K
0b: User 1
0c: User 2
0d: User 3
Feature: 16 (Video gain: Red)
Feature: 18 (Video gain: Green)
Feature: 1A (Video gain: Blue)
Feature: 52 (Active control)
Feature: 60 (Input Source)
Values (unparsed): 0F 11
Values ( parsed):
0f: DisplayPort-1
11: HDMI-1
Feature: 6C (Video black level: Red)
Feature: 6E (Video black level: Green)
Feature: 70 (Video black level: Blue)
Feature: 86 (Display Scaling)
Values (unparsed): 01 02 05
Values ( parsed):
01: No scaling
02: Max image, no aspect ration distortion
05: Max vertical image with aspect ratio distortion
Feature: 87 (Sharpness)
Values (unparsed): 01 02 03 04 05 06 07
Values ( parsed): 01 02 03 04 05 06 07 (interpretation unavailable)
Feature: AC (Horizontal frequency)
Feature: AE (Vertical frequency)
Feature: B2 (Flat panel sub-pixel layout)
Feature: B6 (Display technology type)
Feature: C0 (Display usage time)
Feature: C6 (Application enable key)
Feature: C8 (Display controller type)
Feature: C9 (Display firmware level)
Feature: CA (OSD/Button Control)
Values (unparsed): 01 02
Values ( parsed):
01: OSD disabled, button events enabled
02: OSD enabled, button events enabled
Feature: CC (OSD Language)
Values (unparsed): 01 02 03 04 05 06 08 0A 0D 14
Values ( parsed):
01: Chinese (traditional, Hantai)
02: English
03: French
04: German
05: Italian
06: Japanese
08: Portuguese (Portugal)
0a: Spanish
0d: Chinese (simplified / Kantai)
14: Dutch
Feature: D6 (Power mode)
Values (unparsed): 01 02 03 04 05
Values ( parsed):
01: DPM: On, DPMS: Off
02: DPM: Off, DPMS: Standby
03: DPM: Off, DPMS: Suspend
04: DPM: Off, DPMS: Off
05: Write only value to turn off display
Feature: DA (Scan mode)
Values (unparsed): 00 02
Values ( parsed):
00: Normal operation
02: Overscan
Feature: DC (Display Mode)
Feature: E0 (Manufacturer specific feature)
Values (unparsed): 02 (00 01 02)
Values ( parsed): 02 01 (interpretation unavailable)
Feature: E1 (Manufacturer specific feature)
Values (unparsed): 02 (00 01) 03 (00 01 02 03 04 05 06 07) 04 (00 01) 0F (00 01) 10 (00 01) 27 (02 03 04 05 07 )
Values ( parsed): 02 03 01 02 03 04 05 06 04 0F 10 27 03 04 05 07 (interpretation unavailable)
Feature: DF (VCP Version)
Feature: E6 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: E7 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: E8 (Manufacturer specific feature)
Values (unparsed): 00 ( 01 02 03 ) 01 02 03 04 05 06 80 81 82 83 84 85 86
Values ( parsed): 00 01 02 03 01 02 03 04 05 06 80 81 82 83 84 85 86 (interpretation unavailable)
Feature: E9 (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EA (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EB (Manufacturer specific feature)
Values (unparsed): 00 (00 01 02 03 04 )
Values ( parsed): 00 01 02 03 04 (interpretation unavailable)
Feature: DE (Scratch Pad)
Values (unparsed): 00 (00 01 06 07 )
Values ( parsed): 00 01 06 07 (interpretation unavailable)
Feature: ED (Manufacturer specific feature)
Values (unparsed): 00 01
Values ( parsed): 00 01 (interpretation unavailable)
Feature: EE (Manufacturer specific feature)
Values (unparsed): 01 02 03
Values ( parsed): 01 02 03 (interpretation unavailable)
Feature: EE (Manufacturer specific feature)
Values (unparsed): 01 02 03
Values ( parsed): 01 02 03 (interpretation unavailable)
Feature: F4 (Manufacturer specific feature)
Values (unparsed): 00 (00 01 02 03) 01 (00 01 02 03 04 05 06 07) 02 (00 01 02 03) 0A (00 01 05) 0B (00 01 02 03 04 05 06 07) 11 (00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F)
Values ( parsed): 00 01 02 01 01 02 03 04 05 06 02 01 02 0A 01 0B 01 02 03 04 05 06 11 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E (interpretation unavailable)
Feature: FF (Manufacturer specific feature)
VCP feature characteristics
Display VCP feature characteristics.
$ sudo ddcutil vcpinfo --display 1
VCP code 01: Degauss Causes a CRT to perform a degauss cycle MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Write Only, Non-Continuous (write-only) VCP code 02: New control value Indicates that a display user control (other than power) has been used to change and save (or autosave) a new value. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex) VCP code 03: Soft controls Allows display controls to be used as soft keys MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code 04: Restore factory defaults Restore all factory presets including brightness/contrast, geometry, color, and TV defaults. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Write Only, Non-Continuous (write-only) VCP code 05: Restore factory brightness/contrast defaults Restore factory defaults for brightness and contrast MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Write Only, Non-Continuous (write-only) VCP code 06: Restore factory geometry defaults Restore factory defaults for geometry adjustments MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only) VCP code 08: Restore color defaults Restore factory defaults for color settings. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Write Only, Non-Continuous (write-only) VCP code 0A: Restore factory TV defaults Restore factory defaults for TV functions. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Write Only, Non-Continuous (write-only) VCP code 0B: Color temperature increment Color temperature increment used by feature 0Ch Color Temperature Request MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Only, Non-Continuous (complex) VCP code 0C: Color temperature request Specifies a color temperature (degrees Kelvin) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (complex) VCP code 0E: Clock Increase/decrease the sampling clock frequency. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 10: Brightness Increase/decrease the brightness of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 11: Flesh tone enhancement Select contrast enhancement algorithm respecting flesh tone region MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Non-Continuous (complex) VCP code 12: Contrast Increase/decrease the contrast of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 13: Backlight control Increase/decrease the specified backlight control value MCCS versions: 2.1, 3.0 ddcutil feature subsets: PROFILE, COLOR Attributes (v2.1): Read Write, Continuous (complex) Attributes (v3.0): Read Write, Continuous (complex) Attributes (v2.2): Deprecated, VCP code 14: Select color preset Select a specified color temperature MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Non-Continuous (complex) Attributes (v2.2): Read Write, Non-Continuous (complex) VCP code 16: Video gain: Red Increase/decrease the luminesence of red pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 17: User color vision compensation Increase/decrease the degree of compensation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 18: Video gain: Green Increase/decrease the luminesence of green pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 1A: Video gain: Blue Increase/decrease the luminesence of blue pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 1C: Focus Increase/decrease the focus of the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 1E: Auto setup Perform autosetup function (H/V position, clock, clock phase, A/D converter, etc. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code 1F: Auto color setup Perform color autosetup function (R/G/B gain and offset, A/D setup, etc. MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Non-Continuous (simple) VCP code 20: Horizontal Position (Phase) Increasing (decreasing) this value moves the image toward the right (left) of the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 22: Horizontal Size Increase/decrease the width of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 24: Horizontal Pincushion Increasing (decreasing) this value causes the right and left sides of the image to become more (less) convex. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 26: Horizontal Pincushion Balance Increasing (decreasing) this value moves the center section of the image toward the right (left) side of the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 28: Horizontal Convergence R/B Increasing (decreasing) this value shifts the red pixels to the right (left) and the blue pixels left (right) across the image with respect to the green pixels. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 29: Horizontal Convergence M/G Increasing (decreasing) this value shifts the magenta pixels to the right (left) and the green pixels left (right) across the image with respect to the magenta (sic) pixels. MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 2A: Horizontal Linearity Increase/decrease the density of pixels in the image center. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 2C: Horizontal Linearity Balance Increasing (decreasing) this value shifts the density of pixels from the left (right) side to the right (left) side of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 2E: Gray scale expansion Gray Scale Expansion MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Non-Continuous (complex) VCP code 30: Vertical Position (Phase) Increasing (decreasing) this value moves the image toward the top (bottom) edge of the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 32: Vertical Size Increase/decreasing the height of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 34: Vertical Pincushion Increasing (decreasing) this value will cause the top and bottom edges of the image to become more (less) convex. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 36: Vertical Pincushion Balance Increasing (decreasing) this value will move the center section of the image toward the top (bottom) edge of the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 38: Vertical Convergence R/B Increasing (decreasing) this value shifts the red pixels up (down) across the image and the blue pixels down (up) across the image with respect to the green pixels. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 39: Vertical Convergence M/G Increasing (decreasing) this value shifts the magenta pixels up (down) across the image and the green pixels down (up) across the image with respect to the magenta (sic) pixels. MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 3A: Vertical Linearity Increase/decease the density of scan lines in the image center. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 3C: Vertical Linearity Balance Increase/decrease the density of scan lines in the image center. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 3E: Clock phase Increase/decrease the sampling clock phase shift MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 40: Horizontal Parallelogram Increasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 41: Vertical Parallelogram Increasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image. (sic) MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 42: Horizontal Keystone Increasing (decreasing) this value will increase (decrease) the ratio between the horizontal size at the top of the image and the horizontal size at the bottom of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 43: Vertical Keystone Increasing (decreasing) this value will increase (decrease) the ratio between the vertical size at the left of the image and the vertical size at the right of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 44: Rotation Increasing (decreasing) this value rotates the image (counter) clockwise around the center point of the screen. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 46: Top Corner Flare Increase/decrease the distance between the left and right sides at the top of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 48: Top Corner Hook Increasing (decreasing) this value moves the top of the image to the right (left). MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 4A: Bottom Corner Flare Increase/decrease the distance between the left and right sides at the bottom of the image. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 4C: Bottom Corner Hook Increasing (decreasing) this value moves the bottom end of the image to the right (left). MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 52: Active control Read id of one feature that has changed, 0x00 indicates no more MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex) VCP code 54: Performance Preservation Controls features aimed at preserving display performance MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex) VCP code 56: Horizontal Moire Increase/decrease horizontal moire cancellation. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 58: Vertical Moire Increase/decrease vertical moire cancellation. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 59: 6 axis saturation: Red Increase/decrease red saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 5A: 6 axis saturation: Yellow Increase/decrease yellow saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 5B: 6 axis saturation: Green Increase/decrease green saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 5C: 6 axis saturation: Cyan Increase/decrease cyan saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 5D: 6 axis saturation: Blue Increase/decrease blue saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 5E: 6 axis saturation: Magenta Increase/decrease magenta saturation MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Continuous (normal) VCP code 60: Input Source Selects active video source MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Table (normal) Attributes (v2.2): Read Write, Non-Continuous (simple) VCP code 62: Audio speaker volume Adjusts speaker volume MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Read Write, Non-Continuous with continuous subrange Attributes (v2.2): Read Write, Non-Continuous with continuous subrange VCP code 63: Speaker Select Selects a group of speakers MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes: Read Write, Non-Continuous (simple) VCP code 64: Audio: Microphone Volume Increase/decrease microphone gain MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes: Read Write, Continuous (normal) VCP code 66: Ambient light sensor Enable/Disable ambient light sensor MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code 6B: Backlight Level: White Increase/decrease the white backlight level MCCS versions: 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 6C: Video black level: Red Increase/decrease the black level of red pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 6D: Backlight Level: Red Increase/decrease the red backlight level MCCS versions: 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 6E: Video black level: Green Increase/decrease the black level of green pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 6F: Backlight Level: Green Increase/decrease the green backlight level MCCS versions: 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 70: Video black level: Blue Increase/decrease the black level of blue pixels MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 71: Backlight Level: Blue Increase/decrease the blue backlight level MCCS versions: 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 72: Gamma Select relative or absolute gamma MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Non-Continuous (complex) VCP code 73: LUT Size Provides the size (number of entries and number of bits/entry) for the Red, Green, and Blue LUT in the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: LUT Attributes: Read Only, Table (normal) VCP code 74: Single point LUT operation Writes a single point within the display's LUT, reads a single point from the LUT MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: LUT Attributes: Read Write, Table (normal) VCP code 75: Block LUT operation Load (read) multiple values into (from) the display's LUT MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: LUT Attributes: Read Write, Table (normal) VCP code 76: Remote Procedure Call Initiates a routine resident in the display MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: LUT Attributes: Write Only, Table (write-only) VCP code 78: Display Identification Operation Causes a selected 128 byte block of Display Identification Data (EDID or Display ID) to be read MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.1): Read Only, Table (normal) Attributes (v3.0): Read Only, Table (normal) Attributes (v2.2): Read Only, Table (normal) VCP code 7A: Adjust Focal Plane Increase/decrease the distance to the focal plane of the image MCCS versions: 2.0, 2.1 ddcutil feature subsets: Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, VCP code 7C: Adjust Zoom Increase/decrease the distance to the zoom function of the projection lens (optics) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Continuous (normal) VCP code 7E: Trapezoid Increase/decrease the trapezoid distortion in the image MCCS versions: 2.0, 2.1 ddcutil feature subsets: CRT Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, VCP code 80: Keystone Increase/decrease the keystone distortion in the image. MCCS versions: 2.0 ddcutil feature subsets: CRT Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Deprecated, Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, VCP code 82: Horizontal Mirror (Flip) Flip picture horizontally MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Non-Continuous (simple) Attributes (v2.2): Read Write, Non-Continuous (simple) VCP code 84: Vertical Mirror (Flip) Flip picture vertically MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Non-Continuous (simple) Attributes (v2.2): Read Write, Non-Continuous (simple) VCP code 86: Display Scaling Control the scaling (input vs output) of the display MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code 87: Sharpness Selects one of a range of algorithms. Increasing (decreasing) the value must increase (decrease) the edge sharpness of image features. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Read Write, Continuous (normal) Attributes (v2.2): Read Write, Continuous (normal) VCP code 88: Velocity Scan Modulation Increase (decrease) the velocity modulation of the horizontal scan as a function of the change in luminescence level MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Continuous (normal) VCP code 8A: Color Saturation Increase/decrease the amplitude of the color difference components of the video signal MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR, TV Attributes: Read Write, Continuous (normal) VCP code 8B: TV Channel Up/Down Increment (1) or decrement (2) television channel MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Write Only, Non-Continuous (write-only) VCP code 8C: TV Sharpness Increase/decrease the amplitude of the high frequency components of the video signal MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Read Write, Continuous (normal) VCP code 8D: Audio mute/Screen blank Mute/unmute audio, and (v2.2) screen blank MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV, AUDIO Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Non-Continuous (simple) Attributes (v2.2): Read Write, Non-Continuous (complex) VCP code 8E: TV Contrast Increase/decrease the ratio between blacks and whites in the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Read Write, Continuous (normal) VCP code 8F: Audio Treble Emphasize/de-emphasize high frequency audio MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Read Write, Non-Continuous with continuous subrange Attributes (v2.2): Read Write, Non-Continuous with continuous subrange VCP code 90: Hue Increase/decrease the wavelength of the color component of the video signal. AKA tint. Applies to currently active interface MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR, TV Attributes: Read Write, Continuous (normal) VCP code 91: Audio Bass Emphasize/de-emphasize low frequency audio MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Read Write, Non-Continuous with continuous subrange Attributes (v2.2): Read Write, Non-Continuous with continuous subrange VCP code 92: TV Black level/Luminesence Increase/decrease the black level of the video MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Read Write, Continuous (normal) VCP code 93: Audio Balance L/R Controls left/right audio balance MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: AUDIO Attributes (v2.0): Read Write, Continuous (normal) Attributes (v2.1): Read Write, Continuous (normal) Attributes (v3.0): Read Write, Non-Continuous with continuous subrange Attributes (v2.2): Read Write, Non-Continuous with continuous subrange VCP code 94: Audio Processor Mode Select audio mode MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: TV, AUDIO Attributes: Read Write, Non-Continuous (simple) VCP code 95: Window Position(TL_X) Top left X pixel of an area of the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Continuous (normal) VCP code 96: Window Position(TL_Y) Top left Y pixel of an area of the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Continuous (normal) VCP code 97: Window Position(BR_X) Bottom right X pixel of an area of the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Continuous (normal) VCP code 98: Window Position(BR_Y) Bottom right Y pixel of an area of the image MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Continuous (normal) VCP code 99: Window control on/off Enables the brightness and color within a window to be different from the desktop. MCCS versions: 2.0, 2.1 ddcutil feature subsets: WINDOW Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, VCP code 9A: Window background Changes the contrast ratio between the area of the window and the rest of the desktop MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Continuous (normal) VCP code 9B: 6 axis hue control: Red Decrease shifts toward magenta, increase shifts toward yellow MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 9C: 6 axis hue control: Yellow Decrease shifts toward green, increase shifts toward red MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 9D: 6 axis hue control: Green Decrease shifts toward yellow, increase shifts toward cyan MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 9E: 6 axis hue control: Cyan Decrease shifts toward green, increase shifts toward blue MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code 9F: 6 axis hue control: Blue Decrease shifts toward cyan, increase shifts toward magenta MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code A0: 6 axis hue control: Magenta Decrease shifts toward blue, 127 no effect, increase shifts toward red MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: PROFILE, COLOR Attributes: Read Write, Continuous (normal) VCP code A2: Auto setup on/off Turn on/off an auto setup function MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only) VCP code A4: Window mask control Turn selected window operation on/off, window mask MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes (v2.0): Read Write, Non-Continuous (complex) Attributes (v2.1): Read Write, Non-Continuous (complex) Attributes (v3.0): Read Write, Table (normal) Attributes (v2.2): Read Write, Table (normal) VCP code A5: Change the selected window Change selected window (as defined by 95h..98h) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: WINDOW Attributes: Read Write, Non-Continuous (simple) VCP code AA: Screen Orientation Indicates screen orientation MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple) VCP code AC: Horizontal frequency Horizontal sync signal frequency as determined by the display MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Continuous (complex) VCP code AE: Vertical frequency Vertical sync signal frequency as determined by the display, in .01 hz MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Continuous (complex) VCP code B0: Settings Store/restore the user saved values for the current mode. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only) VCP code B2: Flat panel sub-pixel layout LCD sub-pixel structure MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple) VCP code B4: Source Timing Mode Indicates timing mode being sent by host MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.1): Read Write, Non-Continuous (complex) Attributes (v3.0): Read Write, Table (normal) Attributes (v2.2): Read Write, Table (normal) VCP code B6: Display technology type Indicates the base technology type MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple) VCP code B7: Monitor status Video mode and status of a DPVL capable monitor MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Only, Non-Continuous (complex) VCP code B8: Packet count Counter for DPVL packets received MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code B9: Monitor X origin X origin of the monitor in the vertical screen MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code BA: Monitor Y origin Y origin of the monitor in the vertical screen MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code BB: Header error count Error counter for the DPVL header MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code BC: Body CRC error count CRC error counter for the DPVL body MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code BD: Client ID Assigned identification number for the monitor MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Continuous (complex) VCP code BE: Link control Indicates status of the DVI link MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: DPVL Attributes: Read Write, Non-Continuous (complex) VCP code C0: Display usage time Active power on time in hours MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Continuous (complex) VCP code C2: Display descriptor length Length in bytes of non-volatile storage in the display available for writing a display descriptor, max 256 MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Continuous (normal) VCP code C3: Transmit display descriptor Reads (writes) a display descriptor from (to) non-volatile storage in the display. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Table (normal) VCP code C4: Enable display of 'display descriptor' If enabled, the display descriptor shall be displayed when no video is being received. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex) VCP code C6: Application enable key A 2 byte value used to allow an application to only operate with known products. MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex) VCP code C8: Display controller type Mfg id of controller and 2 byte manufacturer-specific controller type MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex) VCP code C9: Display firmware level 2 byte firmware level MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex) VCP code CA: OSD/Button Control Sets and indicates the current operational state of OSD (and buttons in v2.2) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Non-Continuous (simple) Attributes (v2.2): Read Write, Non-Continuous (complex) VCP code CC: OSD Language On Screen Display language MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code CD: Status Indicators Control up to 16 LED (or similar) indicators to indicate system status MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex) VCP code CE: Auxiliary display size Rows and characters/row of auxiliary display MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex) VCP code CF: Auxiliary display data Sets contents of auxiliary display device MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Write Only, Table (write-only) VCP code D0: Output select Selects the active output MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple) Attributes (v2.1): Read Write, Non-Continuous (simple) Attributes (v3.0): Read Write, Table (normal) Attributes (v2.2): Read Write, Non-Continuous (simple) VCP code D2: Asset Tag Read an Asset Tag to/from the display MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Table (normal) VCP code D4: Stereo video mode Stereo video mode MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex) VCP code D6: Power mode DPM and DPMS status MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code D7: Auxiliary power output Controls an auxiliary power output from a display to a host device MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple) VCP code DA: Scan mode Controls scan characteristics (aka format) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: CRT Attributes: Read Write, Non-Continuous (simple) VCP code DB: Image Mode Controls aspects of the displayed image (TV applications) MCCS versions: 2.1, 3.0, 2.2 ddcutil feature subsets: TV Attributes: Read Write, Non-Continuous (simple) VCP code DC: Display Mode Type of application used on display MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: COLOR Attributes: Read Write, Non-Continuous (simple) VCP code DE: Scratch Pad Operation mode (2.0) or scratch pad (3.0/2.2) MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only) Attributes (v2.1): Read Write, Non-Continuous (complex) Attributes (v3.0): Read Write, Non-Continuous (complex) Attributes (v2.2): Read Write, Non-Continuous (complex) VCP code DF: VCP Version MCCS version MCCS versions: 2.0, 2.1, 3.0, 2.2 ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
$ sudo ddcutil vcpinfo --display 1 --brief
VCP code: 01: Degauss VCP code: 02: New control value VCP code: 03: Soft controls VCP code: 04: Restore factory defaults VCP code: 05: Restore factory brightness/contrast defaults VCP code: 06: Restore factory geometry defaults VCP code: 08: Restore color defaults VCP code: 0A: Restore factory TV defaults VCP code: 0B: Color temperature increment VCP code: 0C: Color temperature request VCP code: 0E: Clock VCP code: 10: Brightness VCP code: 11: Flesh tone enhancement VCP code: 12: Contrast VCP code: 13: Backlight control VCP code: 14: Select color preset VCP code: 16: Video gain: Red VCP code: 17: User color vision compensation VCP code: 18: Video gain: Green VCP code: 1A: Video gain: Blue VCP code: 1C: Focus VCP code: 1E: Auto setup VCP code: 1F: Auto color setup VCP code: 20: Horizontal Position (Phase) VCP code: 22: Horizontal Size VCP code: 24: Horizontal Pincushion VCP code: 26: Horizontal Pincushion Balance VCP code: 28: Horizontal Convergence R/B VCP code: 29: Horizontal Convergence M/G VCP code: 2A: Horizontal Linearity VCP code: 2C: Horizontal Linearity Balance VCP code: 2E: Gray scale expansion VCP code: 30: Vertical Position (Phase) VCP code: 32: Vertical Size VCP code: 34: Vertical Pincushion VCP code: 36: Vertical Pincushion Balance VCP code: 38: Vertical Convergence R/B VCP code: 39: Vertical Convergence M/G VCP code: 3A: Vertical Linearity VCP code: 3C: Vertical Linearity Balance VCP code: 3E: Clock phase VCP code: 40: Horizontal Parallelogram VCP code: 41: Vertical Parallelogram VCP code: 42: Horizontal Keystone VCP code: 43: Vertical Keystone VCP code: 44: Rotation VCP code: 46: Top Corner Flare VCP code: 48: Top Corner Hook VCP code: 4A: Bottom Corner Flare VCP code: 4C: Bottom Corner Hook VCP code: 52: Active control VCP code: 54: Performance Preservation VCP code: 56: Horizontal Moire VCP code: 58: Vertical Moire VCP code: 59: 6 axis saturation: Red VCP code: 5A: 6 axis saturation: Yellow VCP code: 5B: 6 axis saturation: Green VCP code: 5C: 6 axis saturation: Cyan VCP code: 5D: 6 axis saturation: Blue VCP code: 5E: 6 axis saturation: Magenta VCP code: 60: Input Source VCP code: 62: Audio speaker volume VCP code: 63: Speaker Select VCP code: 64: Audio: Microphone Volume VCP code: 66: Ambient light sensor VCP code: 6B: Backlight Level: White VCP code: 6C: Video black level: Red VCP code: 6D: Backlight Level: Red VCP code: 6E: Video black level: Green VCP code: 6F: Backlight Level: Green VCP code: 70: Video black level: Blue VCP code: 71: Backlight Level: Blue VCP code: 72: Gamma VCP code: 73: LUT Size VCP code: 74: Single point LUT operation VCP code: 75: Block LUT operation VCP code: 76: Remote Procedure Call VCP code: 78: Display Identification Operation VCP code: 7A: Adjust Focal Plane VCP code: 7C: Adjust Zoom VCP code: 7E: Trapezoid VCP code: 80: Keystone VCP code: 82: Horizontal Mirror (Flip) VCP code: 84: Vertical Mirror (Flip) VCP code: 86: Display Scaling VCP code: 87: Sharpness VCP code: 88: Velocity Scan Modulation VCP code: 8A: Color Saturation VCP code: 8B: TV Channel Up/Down VCP code: 8C: TV Sharpness VCP code: 8D: Audio mute/Screen blank VCP code: 8E: TV Contrast VCP code: 8F: Audio Treble VCP code: 90: Hue VCP code: 91: Audio Bass VCP code: 92: TV Black level/Luminesence VCP code: 93: Audio Balance L/R VCP code: 94: Audio Processor Mode VCP code: 95: Window Position(TL_X) VCP code: 96: Window Position(TL_Y) VCP code: 97: Window Position(BR_X) VCP code: 98: Window Position(BR_Y) VCP code: 99: Window control on/off VCP code: 9A: Window background VCP code: 9B: 6 axis hue control: Red VCP code: 9C: 6 axis hue control: Yellow VCP code: 9D: 6 axis hue control: Green VCP code: 9E: 6 axis hue control: Cyan VCP code: 9F: 6 axis hue control: Blue VCP code: A0: 6 axis hue control: Magenta VCP code: A2: Auto setup on/off VCP code: A4: Window mask control VCP code: A5: Change the selected window VCP code: AA: Screen Orientation VCP code: AC: Horizontal frequency VCP code: AE: Vertical frequency VCP code: B0: Settings VCP code: B2: Flat panel sub-pixel layout VCP code: B4: Source Timing Mode VCP code: B6: Display technology type VCP code: B7: Monitor status VCP code: B8: Packet count VCP code: B9: Monitor X origin VCP code: BA: Monitor Y origin VCP code: BB: Header error count VCP code: BC: Body CRC error count VCP code: BD: Client ID VCP code: BE: Link control VCP code: C0: Display usage time VCP code: C2: Display descriptor length VCP code: C3: Transmit display descriptor VCP code: C4: Enable display of 'display descriptor' VCP code: C6: Application enable key VCP code: C8: Display controller type VCP code: C9: Display firmware level VCP code: CA: OSD/Button Control VCP code: CC: OSD Language VCP code: CD: Status Indicators VCP code: CE: Auxiliary display size VCP code: CF: Auxiliary display data VCP code: D0: Output select VCP code: D2: Asset Tag VCP code: D4: Stereo video mode VCP code: D6: Power mode VCP code: D7: Auxiliary power output VCP code: DA: Scan mode VCP code: DB: Image Mode VCP code: DC: Display Mode VCP code: DE: Scratch Pad VCP code: DF: VCP Version
$ sudo ddcutil vcpinfo --display 1 --verbose
VCP code 01: Degauss
Causes a CRT to perform a degauss cycle
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: CRT
Attributes: Write Only, Non-Continuous (write-only)
VCP code 02: New control value
Indicates that a display user control (other than power) has been used to change and save (or autosave) a new value.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (complex)
Simple NC values:
0x01: No new control values
0x02: One or more new control values have been saved
0xff: No user controls are present
VCP code 03: Soft controls
Allows display controls to be used as soft keys
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: No button active
0x01: Button 1 active
0x02: Button 2 active
0x03: Button 3 active
0x04: Button 4 active
0x05: Button 5 active
0x06: Button 6 active
0x07: Button 7 active
0xff: No user controls are present
VCP code 04: Restore factory defaults
Restore all factory presets including brightness/contrast, geometry, color, and TV defaults.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets: COLOR
Attributes: Write Only, Non-Continuous (write-only)
VCP code 05: Restore factory brightness/contrast defaults
Restore factory defaults for brightness and contrast
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets: COLOR
Attributes: Write Only, Non-Continuous (write-only)
VCP code 06: Restore factory geometry defaults
Restore factory defaults for geometry adjustments
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets:
Attributes: Write Only, Non-Continuous (write-only)
VCP code 08: Restore color defaults
Restore factory defaults for color settings.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets: COLOR
Attributes: Write Only, Non-Continuous (write-only)
VCP code 0A: Restore factory TV defaults
Restore factory defaults for TV functions.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets: TV
Attributes: Write Only, Non-Continuous (write-only)
VCP code 0B: Color temperature increment
Color temperature increment used by feature 0Ch Color Temperature Request
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Only, Non-Continuous (complex)
VCP code 0C: Color temperature request
Specifies a color temperature (degrees Kelvin)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (complex)
VCP code 0E: Clock
Increase/decrease the sampling clock frequency.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 10: Brightness
Increase/decrease the brightness of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 11: Flesh tone enhancement
Select contrast enhancement algorithm respecting flesh tone region
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Non-Continuous (complex)
VCP code 12: Contrast
Increase/decrease the contrast of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 13: Backlight control
Increase/decrease the specified backlight control value
MCCS versions: 2.1, 3.0
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes (v2.1): Read Write, Continuous (complex)
Attributes (v3.0): Read Write, Continuous (complex)
Attributes (v2.2): Deprecated,
VCP code 14: Select color preset
Select a specified color temperature
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Non-Continuous (complex)
Attributes (v2.2): Read Write, Non-Continuous (complex)
Simple NC values:
0x01: sRGB
0x02: Display Native
0x03: 4000 K
0x04: 5000 K
0x05: 6500 K
0x06: 7500 K
0x07: 8200 K
0x08: 9300 K
0x09: 10000 K
0x0a: 11500 K
0x0b: User 1
0x0c: User 2
0x0d: User 3
VCP code 16: Video gain: Red
Increase/decrease the luminesence of red pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 17: User color vision compensation
Increase/decrease the degree of compensation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 18: Video gain: Green
Increase/decrease the luminesence of green pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 1A: Video gain: Blue
Increase/decrease the luminesence of blue pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 1C: Focus
Increase/decrease the focus of the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 1E: Auto setup
Perform autosetup function (H/V position, clock, clock phase, A/D converter, etc.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Auto setup not active
0x01: Performing auto setup
0x02: Enable continuous/periodic auto setup
VCP code 1F: Auto color setup
Perform color autosetup function (R/G/B gain and offset, A/D setup, etc.
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Auto setup not active
0x01: Performing auto setup
0x02: Enable continuous/periodic auto setup
VCP code 20: Horizontal Position (Phase)
Increasing (decreasing) this value moves the image toward the right (left) of the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 22: Horizontal Size
Increase/decrease the width of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 24: Horizontal Pincushion
Increasing (decreasing) this value causes the right and left sides of the image to become more (less) convex.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 26: Horizontal Pincushion Balance
Increasing (decreasing) this value moves the center section of the image toward the right (left) side of the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 28: Horizontal Convergence R/B
Increasing (decreasing) this value shifts the red pixels to the right (left) and the blue pixels left (right) across the image with respect to the green pixels.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 29: Horizontal Convergence M/G
Increasing (decreasing) this value shifts the magenta pixels to the right (left) and the green pixels left (right) across the image with respect to the magenta (sic) pixels.
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 2A: Horizontal Linearity
Increase/decrease the density of pixels in the image center.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 2C: Horizontal Linearity Balance
Increasing (decreasing) this value shifts the density of pixels from the left (right) side to the right (left) side of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 2E: Gray scale expansion
Gray Scale Expansion
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Non-Continuous (complex)
VCP code 30: Vertical Position (Phase)
Increasing (decreasing) this value moves the image toward the top (bottom) edge of the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 32: Vertical Size
Increase/decreasing the height of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 34: Vertical Pincushion
Increasing (decreasing) this value will cause the top and bottom edges of the image to become more (less) convex.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 36: Vertical Pincushion Balance
Increasing (decreasing) this value will move the center section of the image toward the top (bottom) edge of the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 38: Vertical Convergence R/B
Increasing (decreasing) this value shifts the red pixels up (down) across the image and the blue pixels down (up) across the image with respect to the green pixels.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 39: Vertical Convergence M/G
Increasing (decreasing) this value shifts the magenta pixels up (down) across the image and the green pixels down (up) across the image with respect to the magenta (sic) pixels.
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 3A: Vertical Linearity
Increase/decease the density of scan lines in the image center.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 3C: Vertical Linearity Balance
Increase/decrease the density of scan lines in the image center.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 3E: Clock phase
Increase/decrease the sampling clock phase shift
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 40: Horizontal Parallelogram
Increasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 41: Vertical Parallelogram
Increasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image. (sic)
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 42: Horizontal Keystone
Increasing (decreasing) this value will increase (decrease) the ratio between the horizontal size at the top of the image and the horizontal size at the bottom of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 43: Vertical Keystone
Increasing (decreasing) this value will increase (decrease) the ratio between the vertical size at the left of the image and the vertical size at the right of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 44: Rotation
Increasing (decreasing) this value rotates the image (counter) clockwise around the center point of the screen.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 46: Top Corner Flare
Increase/decrease the distance between the left and right sides at the top of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 48: Top Corner Hook
Increasing (decreasing) this value moves the top of the image to the right (left).
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 4A: Bottom Corner Flare
Increase/decrease the distance between the left and right sides at the bottom of the image.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 4C: Bottom Corner Hook
Increasing (decreasing) this value moves the bottom end of the image to the right (left).
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 52: Active control
Read id of one feature that has changed, 0x00 indicates no more
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
VCP code 54: Performance Preservation
Controls features aimed at preserving display performance
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (complex)
VCP code 56: Horizontal Moire
Increase/decrease horizontal moire cancellation.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 58: Vertical Moire
Increase/decrease vertical moire cancellation.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 59: 6 axis saturation: Red
Increase/decrease red saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 5A: 6 axis saturation: Yellow
Increase/decrease yellow saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 5B: 6 axis saturation: Green
Increase/decrease green saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 5C: 6 axis saturation: Cyan
Increase/decrease cyan saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 5D: 6 axis saturation: Blue
Increase/decrease blue saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 5E: 6 axis saturation: Magenta
Increase/decrease magenta saturation
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Continuous (normal)
VCP code 60: Input Source
Selects active video source
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Table (normal)
Attributes (v2.2): Read Write, Non-Continuous (simple)
Simple NC values:
0x01: VGA-1
0x02: VGA-2
0x03: DVI-1
0x04: DVI-2
0x05: Composite video 1
0x06: Composite video 2
0x07: S-Video-1
0x08: S-Video-2
0x09: Tuner-1
0x0a: Tuner-2
0x0b: Tuner-3
0x0c: Component video (YPrPb/YCrCb) 1
0x0d: Component video (YPrPb/YCrCb) 2
0x0e: Component video (YPrPb/YCrCb) 3
0x0f: DisplayPort-1
0x10: DisplayPort-2
0x11: HDMI-1
0x12: HDMI-2
VCP code 62: Audio speaker volume
Adjusts speaker volume
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Read Write, Non-Continuous with continuous subrange
Attributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 63: Speaker Select
Selects a group of speakers
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Front L/R
0x01: Side L/R
0x02: Rear L/R
0x03: Center/Subwoofer
VCP code 64: Audio: Microphone Volume
Increase/decrease microphone gain
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes: Read Write, Continuous (normal)
VCP code 66: Ambient light sensor
Enable/Disable ambient light sensor
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x01: Disabled
0x02: Enabled
VCP code 6B: Backlight Level: White
Increase/decrease the white backlight level
MCCS versions: 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 6C: Video black level: Red
Increase/decrease the black level of red pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 6D: Backlight Level: Red
Increase/decrease the red backlight level
MCCS versions: 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 6E: Video black level: Green
Increase/decrease the black level of green pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 6F: Backlight Level: Green
Increase/decrease the green backlight level
MCCS versions: 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 70: Video black level: Blue
Increase/decrease the black level of blue pixels
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 71: Backlight Level: Blue
Increase/decrease the blue backlight level
MCCS versions: 2.2
MCCS specification groups: Image
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 72: Gamma
Select relative or absolute gamma
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Non-Continuous (complex)
VCP code 73: LUT Size
Provides the size (number of entries and number of bits/entry) for the Red, Green, and Blue LUT in the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets: LUT
Attributes: Read Only, Table (normal)
VCP code 74: Single point LUT operation
Writes a single point within the display's LUT, reads a single point from the LUT
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets: LUT
Attributes: Read Write, Table (normal)
VCP code 75: Block LUT operation
Load (read) multiple values into (from) the display's LUT
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets: LUT
Attributes: Read Write, Table (normal)
VCP code 76: Remote Procedure Call
Initiates a routine resident in the display
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: LUT
Attributes: Write Only, Table (write-only)
VCP code 78: Display Identification Operation
Causes a selected 128 byte block of Display Identification Data (EDID or Display ID) to be read
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes (v2.1): Read Only, Table (normal)
Attributes (v3.0): Read Only, Table (normal)
Attributes (v2.2): Read Only, Table (normal)
VCP code 7A: Adjust Focal Plane
Increase/decrease the distance to the focal plane of the image
MCCS versions: 2.0, 2.1
MCCS specification groups: Image
ddcutil feature subsets:
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Deprecated,
Attributes (v2.2): Deprecated,
VCP code 7C: Adjust Zoom
Increase/decrease the distance to the zoom function of the projection lens (optics)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Continuous (normal)
VCP code 7E: Trapezoid
Increase/decrease the trapezoid distortion in the image
MCCS versions: 2.0, 2.1
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Deprecated,
Attributes (v2.2): Deprecated,
VCP code 80: Keystone
Increase/decrease the keystone distortion in the image.
MCCS versions: 2.0
MCCS specification groups: Geometry
ddcutil feature subsets: CRT
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Deprecated,
Attributes (v3.0): Deprecated,
Attributes (v2.2): Deprecated,
VCP code 82: Horizontal Mirror (Flip)
Flip picture horizontally
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Geometry
ddcutil feature subsets:
Attributes (v2.0): Write Only, Non-Continuous (write-only)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Non-Continuous (simple)
Attributes (v2.2): Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Normal mode
0x01: Mirrored horizontally mode
VCP code 84: Vertical Mirror (Flip)
Flip picture vertically
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Geometry
ddcutil feature subsets:
Attributes (v2.0): Write Only, Non-Continuous (write-only)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Non-Continuous (simple)
Attributes (v2.2): Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Normal mode
0x01: Mirrored vertically mode
VCP code 86: Display Scaling
Control the scaling (input vs output) of the display
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x01: No scaling
0x02: Max image, no aspect ration distortion
0x03: Max vertical image, no aspect ratio distortion
0x04: Max horizontal image, no aspect ratio distortion
0x05: Max vertical image with aspect ratio distortion
0x06: Max horizontal image with aspect ratio distortion
0x07: Linear expansion (compression) on horizontal axis
0x08: Linear expansion (compression) on h and v axes
0x09: Squeeze mode
0x0a: Non-linear expansion
VCP code 87: Sharpness
Selects one of a range of algorithms. Increasing (decreasing) the value must increase (decrease) the edge sharpness of image features.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Read Write, Continuous (normal)
Attributes (v2.2): Read Write, Continuous (normal)
Simple NC values:
0x01: Filter function 1
0x02: Filter function 2
0x03: Filter function 3
0x04: Filter function 4
VCP code 88: Velocity Scan Modulation
Increase (decrease) the velocity modulation of the horizontal scan as a function of the change in luminescence level
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets: CRT
Attributes: Read Write, Continuous (normal)
VCP code 8A: Color Saturation
Increase/decrease the amplitude of the color difference components of the video signal
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR, TV
Attributes: Read Write, Continuous (normal)
VCP code 8B: TV Channel Up/Down
Increment (1) or decrement (2) television channel
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: TV
Attributes: Write Only, Non-Continuous (write-only)
Simple NC values:
0x01: Increment channel
0x02: Decrement channel
VCP code 8C: TV Sharpness
Increase/decrease the amplitude of the high frequency components of the video signal
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets: TV
Attributes: Read Write, Continuous (normal)
VCP code 8D: Audio mute/Screen blank
Mute/unmute audio, and (v2.2) screen blank
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: TV, AUDIO
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Non-Continuous (simple)
Attributes (v2.2): Read Write, Non-Continuous (complex)
Simple NC values:
0x01: Mute the audio
0x02: Unmute the audio
VCP code 8E: TV Contrast
Increase/decrease the ratio between blacks and whites in the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: TV
Attributes: Read Write, Continuous (normal)
VCP code 8F: Audio Treble
Emphasize/de-emphasize high frequency audio
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Read Write, Non-Continuous with continuous subrange
Attributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 90: Hue
Increase/decrease the wavelength of the color component of the video signal. AKA tint. Applies to currently active interface
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: COLOR, TV
Attributes: Read Write, Continuous (normal)
VCP code 91: Audio Bass
Emphasize/de-emphasize low frequency audio
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Read Write, Non-Continuous with continuous subrange
Attributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 92: TV Black level/Luminesence
Increase/decrease the black level of the video
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets: TV
Attributes: Read Write, Continuous (normal)
VCP code 93: Audio Balance L/R
Controls left/right audio balance
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: AUDIO
Attributes (v2.0): Read Write, Continuous (normal)
Attributes (v2.1): Read Write, Continuous (normal)
Attributes (v3.0): Read Write, Non-Continuous with continuous subrange
Attributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 94: Audio Processor Mode
Select audio mode
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Audio
ddcutil feature subsets: TV, AUDIO
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Speaker off/Audio not supported
0x01: Mono
0x02: Stereo
0x03: Stereo expanded
0x11: SRS 2.0
0x12: SRS 2.1
0x13: SRS 3.1
0x14: SRS 4.1
0x15: SRS 5.1
0x16: SRS 6.1
0x17: SRS 7.1
0x21: Dolby 2.0
0x22: Dolby 2.1
0x23: Dolby 3.1
0x24: Dolby 4.1
0x25: Dolby 5.1
0x26: Dolby 6.1
0x27: Dolby 7.1
0x31: THX 2.0
0x32: THX 2.1
0x33: THX 3.1
0x34: THX 4.1
0x35: THX 5.1
0x36: THX 6.1
0x37: THX 7.1
VCP code 95: Window Position(TL_X)
Top left X pixel of an area of the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Continuous (normal)
VCP code 96: Window Position(TL_Y)
Top left Y pixel of an area of the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Continuous (normal)
VCP code 97: Window Position(BR_X)
Bottom right X pixel of an area of the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Continuous (normal)
VCP code 98: Window Position(BR_Y)
Bottom right Y pixel of an area of the image
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Geometry, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Continuous (normal)
VCP code 99: Window control on/off
Enables the brightness and color within a window to be different from the desktop.
MCCS versions: 2.0, 2.1
MCCS specification groups: Window
ddcutil feature subsets: WINDOW
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Deprecated,
Attributes (v2.2): Deprecated,
Simple NC values:
0x00: No effect
0x01: Off
0x02: On
VCP code 9A: Window background
Changes the contrast ratio between the area of the window and the rest of the desktop
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Continuous (normal)
VCP code 9B: 6 axis hue control: Red
Decrease shifts toward magenta, increase shifts toward yellow
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 9C: 6 axis hue control: Yellow
Decrease shifts toward green, increase shifts toward red
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 9D: 6 axis hue control: Green
Decrease shifts toward yellow, increase shifts toward cyan
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 9E: 6 axis hue control: Cyan
Decrease shifts toward green, increase shifts toward blue
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code 9F: 6 axis hue control: Blue
Decrease shifts toward cyan, increase shifts toward magenta
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code A0: 6 axis hue control: Magenta
Decrease shifts toward blue, 127 no effect, increase shifts toward red
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: PROFILE, COLOR
Attributes: Read Write, Continuous (normal)
VCP code A2: Auto setup on/off
Turn on/off an auto setup function
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets:
Attributes: Write Only, Non-Continuous (write-only)
Simple NC values:
0x01: Off
0x02: On
VCP code A4: Window mask control
Turn selected window operation on/off, window mask
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: WINDOW
Attributes (v2.0): Read Write, Non-Continuous (complex)
Attributes (v2.1): Read Write, Non-Continuous (complex)
Attributes (v3.0): Read Write, Table (normal)
Attributes (v2.2): Read Write, Table (normal)
VCP code A5: Change the selected window
Change selected window (as defined by 95h..98h)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Window
ddcutil feature subsets: WINDOW
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Full display image area selected except active windows
0x01: Window 1 selected
0x02: Window 2 selected
0x03: Window 3 selected
0x04: Window 4 selected
0x05: Window 5 selected
0x06: Window 6 selected
0x07: Window 7 selected
VCP code AA: Screen Orientation
Indicates screen orientation
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Geometry
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (simple)
Simple NC values:
0x01: 0 degrees
0x02: 90 degrees
0x03: 180 degrees
0x04: 270 degrees
0xff: Display cannot supply orientation
VCP code AC: Horizontal frequency
Horizontal sync signal frequency as determined by the display
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Continuous (complex)
VCP code AE: Vertical frequency
Vertical sync signal frequency as determined by the display, in .01 hz
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Continuous (complex)
VCP code B0: Settings
Store/restore the user saved values for the current mode.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Preset
ddcutil feature subsets:
Attributes: Write Only, Non-Continuous (write-only)
Simple NC values:
0x01: Store current settings in the monitor
0x02: Restore factory defaults for current mode
VCP code B2: Flat panel sub-pixel layout
LCD sub-pixel structure
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (simple)
Simple NC values:
0x00: Sub-pixel layout not defined
0x01: Red/Green/Blue vertical stripe
0x02: Red/Green/Blue horizontal stripe
0x03: Blue/Green/Red vertical stripe
0x04: Blue/Green/Red horizontal stripe
0x05: Quad pixel, red at top left
0x06: Quad pixel, red at bottom left
0x07: Delta (triad)
0x08: Mosaic
VCP code B4: Source Timing Mode
Indicates timing mode being sent by host
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Control
ddcutil feature subsets:
Attributes (v2.1): Read Write, Non-Continuous (complex)
Attributes (v3.0): Read Write, Table (normal)
Attributes (v2.2): Read Write, Table (normal)
VCP code B6: Display technology type
Indicates the base technology type
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (simple)
Simple NC values:
0x01: CRT (shadow mask)
0x02: CRT (aperture grill)
0x03: LCD (active matrix)
0x04: LCos
0x05: Plasma
0x06: OLED
0x07: EL
0x08: MEM
VCP code B7: Monitor status
Video mode and status of a DPVL capable monitor
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Only, Non-Continuous (complex)
VCP code B8: Packet count
Counter for DPVL packets received
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code B9: Monitor X origin
X origin of the monitor in the vertical screen
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code BA: Monitor Y origin
Y origin of the monitor in the vertical screen
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code BB: Header error count
Error counter for the DPVL header
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code BC: Body CRC error count
CRC error counter for the DPVL body
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code BD: Client ID
Assigned identification number for the monitor
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Continuous (complex)
VCP code BE: Link control
Indicates status of the DVI link
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: DPVL
ddcutil feature subsets: DPVL
Attributes: Read Write, Non-Continuous (complex)
VCP code C0: Display usage time
Active power on time in hours
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Continuous (complex)
VCP code C2: Display descriptor length
Length in bytes of non-volatile storage in the display available for writing a display descriptor, max 256
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Continuous (normal)
VCP code C3: Transmit display descriptor
Reads (writes) a display descriptor from (to) non-volatile storage in the display.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Table (normal)
VCP code C4: Enable display of 'display descriptor'
If enabled, the display descriptor shall be displayed when no video is being received.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (complex)
VCP code C6: Application enable key
A 2 byte value used to allow an application to only operate with known products.
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
VCP code C8: Display controller type
Mfg id of controller and 2 byte manufacturer-specific controller type
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Control, Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
Simple NC values:
0x01: Conexant
0x02: Genesis
0x03: Macronix
0x04: IDT
0x05: Mstar
0x06: Myson
0x07: Phillips
0x08: PixelWorks
0x09: RealTek
0x0a: Sage
0x0b: Silicon Image
0x0c: SmartASIC
0x0d: STMicroelectronics
0x0e: Topro
0x0f: Trumpion
0x10: Welltrend
0x11: Samsung
0x12: Novatek
0x13: STK
0x14: Silicon Optics
0x15: Texas Instruments
0x16: Analogix
0x17: Quantum Data
0x18: NXP Semiconductors
0x19: Chrontel
0x1a: Parade Technologies
0x1b: THine Electronics
0x1c: Trident
0x1d: Micros
0xff: Not defined - a manufacturer designed controller
VCP code C9: Display firmware level
2 byte firmware level
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Control, Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
VCP code CA: OSD/Button Control
Sets and indicates the current operational state of OSD (and buttons in v2.2)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Control, Miscellaneous
ddcutil feature subsets:
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Non-Continuous (simple)
Attributes (v2.2): Read Write, Non-Continuous (complex)
Simple NC values:
0x01: OSD Disabled
0x02: OSD Enabled
0xff: Display cannot supply this information
VCP code CC: OSD Language
On Screen Display language
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Control, Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Reserved value, must be ignored
0x01: Chinese (traditional, Hantai)
0x02: English
0x03: French
0x04: German
0x05: Italian
0x06: Japanese
0x07: Korean
0x08: Portuguese (Portugal)
0x09: Russian
0x0a: Spanish
0x0b: Swedish
0x0c: Turkish
0x0d: Chinese (simplified / Kantai)
0x0e: Portuguese (Brazil)
0x0f: Arabic
0x10: Bulgarian
0x11: Croatian
0x12: Czech
0x13: Danish
0x14: Dutch
0x15: Estonian
0x16: Finnish
0x17: Greek
0x18: Hebrew
0x19: Hindi
0x1a: Hungarian
0x1b: Latvian
0x1c: Lithuanian
0x1d: Norwegian
0x1e: Polish
0x1f: Romanian
0x20: Serbian
0x21: Slovak
0x22: Slovenian
0x23: Thai
0x24: Ukranian
0x25: Vietnamese
VCP code CD: Status Indicators
Control up to 16 LED (or similar) indicators to indicate system status
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (complex)
VCP code CE: Auxiliary display size
Rows and characters/row of auxiliary display
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
VCP code CF: Auxiliary display data
Sets contents of auxiliary display device
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Write Only, Table (write-only)
VCP code D0: Output select
Selects the active output
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes (v2.0): Read Write, Non-Continuous (simple)
Attributes (v2.1): Read Write, Non-Continuous (simple)
Attributes (v3.0): Read Write, Table (normal)
Attributes (v2.2): Read Write, Non-Continuous (simple)
Simple NC values:
0x01: Analog video (R/G/B) 1
0x02: Analog video (R/G/B) 2
0x03: Digital video (TDMS) 1
0x04: Digital video (TDMS) 22
0x05: Composite video 1
0x06: Composite video 2
0x07: S-Video-1
0x08: S-Video-2
0x09: Tuner-1
0x0a: Tuner-2
0x0b: Tuner-3
0x0c: Component video (YPrPb/YCrCb) 1
0x0d: Component video (YPrPb/YCrCb) 2
0x0e: Component video (YPrPb/YCrCb) 3
0x0f: DisplayPort-1
0x10: DisplayPort-2
0x11: HDMI-1
0x12: HDMI-2
VCP code D2: Asset Tag
Read an Asset Tag to/from the display
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Table (normal)
VCP code D4: Stereo video mode
Stereo video mode
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (complex)
VCP code D6: Power mode
DPM and DPMS status
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Control, Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x01: DPM: On, DPMS: Off
0x02: DPM: Off, DPMS: Standby
0x03: DPM: Off, DPMS: Suspend
0x04: DPM: Off, DPMS: Off
0x05: Write only value to turn off display
VCP code D7: Auxiliary power output
Controls an auxiliary power output from a display to a host device
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x01: Disable auxiliary power
0x02: Enable Auxiliary power
VCP code DA: Scan mode
Controls scan characteristics (aka format)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image, Geometry
ddcutil feature subsets: CRT
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Normal operation
0x01: Underscan
0x02: Overscan
0x03: Widescreen
VCP code DB: Image Mode
Controls aspects of the displayed image (TV applications)
MCCS versions: 2.1, 3.0, 2.2
MCCS specification groups: Control
ddcutil feature subsets: TV
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: No effect
0x01: Full mode
0x02: Zoom mode
0x03: Squeeze mode
0x04: Variable
VCP code DC: Display Mode
Type of application used on display
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Image
ddcutil feature subsets: COLOR
Attributes: Read Write, Non-Continuous (simple)
Simple NC values:
0x00: Standard/Default mode
0x01: Productivity
0x02: Mixed
0x03: Movie
0x04: User defined
0x05: Games
0x06: Sports
0x07: Professional (all signal processing disabled)
0x08: Standard/Default mode with intermediate power consumption
0x09: Standard/Default mode with low power consumption
0x0a: Demonstration
0xf0: Dynamic contrast
VCP code DE: Scratch Pad
Operation mode (2.0) or scratch pad (3.0/2.2)
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes (v2.0): Write Only, Non-Continuous (write-only)
Attributes (v2.1): Read Write, Non-Continuous (complex)
Attributes (v3.0): Read Write, Non-Continuous (complex)
Attributes (v2.2): Read Write, Non-Continuous (complex)
VCP code DF: VCP Version
MCCS version
MCCS versions: 2.0, 2.1, 3.0, 2.2
MCCS specification groups: Miscellaneous
ddcutil feature subsets:
Attributes: Read Only, Non-Continuous (complex)
Alter monitor settings
Get current VCP feature value.
$ sudo ddcutil getvcp --display 1 10
VCP code 0x10 (Brightness ): current value = 100, max value = 100
$ sudo ddcutil getvcp --display 1 10 --brief
VCP 10 C 100 100
$ sudo ddcutil getvcp --display 1 10 --verbose
Feature definition file not found: HPN-HP_X24c-14226.mccs Getting data for non-table VCP code 0x10 - Brightness: Raw value: opcode=0x10, mh=0x00, ml=0x64, sh=0x00, sl=0x64, max_val=100 (0x0064), cur_val=100 (0x0064) VCP code 0x10 (Brightness ): current value = 100, max value = 100
Set VCP feature value.
$ sudo ddcutil setvcp --display 1 10 80
The VCP value will change immediately.
$ sudo ddcutil getvcp --display 1 10
VCP code 0x10 (Brightness ): current value = 80, max value = 100
Backup and restore configuration
Write current settings to a file.
$ sudo ddcutil dumpvcp --display 1 hpx24c.vcp
Read and apply settings from a file.
$ sudo ddcutil loadvcp --display 1 hpx24c.vcp
Inspect stored values.
$ cat hpx24c.vcp
TIMESTAMP_TEXT 20220620-230252 MFG_ID HPN MODEL HP X24c PRODUCT_CODE 14226 SN 1CR135172D EDID 00FFFFFFFFFFFF00220E923701010101231F010380341D782A2905AA534B9B23155054A10800D1C0A9C081C0B3009500810081800101023A801871382D40582C450009252100001E000000FD0030901EA723010A202020202020000000FC00485020583234630A2020202020000000FF00314352313335313732440A2020011D VCP_VERSION 2.2 VCP 10 100 VCP 12 80 VCP 14 11 VCP 16 254 VCP 18 246 VCP 1A 253 VCP 6C 50 VCP 6E 50 VCP 70 50
