Since Debian Jessie installation, I have encountered Hangcheck timer elapsed error. It is a really nasty bug as the only way to escape frozen X Window System is to reboot the whole operating system.
Recently, I noticed “Failed to save changes” error when tried to move events between distinct calendars. After a short investigation I found that this bug is already fixed, but not packaged for an easy upgrade, so I will shortly describe how to apply fix for Debian Wheezy and Kolab 3.3.
What do these four things have in common? Ubuntu headless server will not boot after power failure as Grub will indefinitely wait for user input. The root of this problem lies inside Ubuntu default Grub configuration as Grub will simply set timeout to infinity when recordfail parameter is set.
Today I went almost crazy because of automatic mounting and opening of the removable storage devices, fortunately this behavior can be quickly changed by the use of thunar-volman-settings command.
Recently I decided to upgrade my Nexus 7 to the Android 4.3 Jelly Bean, but quickly encountered InvalidState error when tried to update bootloader.
Yesterday I added a few mail aliases using Kolab admin interface and went to sleep. Today I noticed high CPU usage and quickly found that there is a small problem with pykolab 0.5.11-5 package.
Login Security Solution is a very useful plugin if you want to slow down brute force attacks, enforce password policies and timeout inactive sessions. It is also worth mentioning that it records the IP address of every failed login attempt so it is easy to integrate with your own solutions such as htaccess deny directive.
I am using mainly Polish language so it is obvious that fairly quickly I encountered a problem with national characters in the subject line. Problem is not fixed in Debian packages (using Debian Wheezy x86_64 and Kolab Systems – Public Repositories) but luckily it is very easy to fix.