I've Archlinux installed on my laptop Fujitsu Amilo Pi 2*** and I cannot find any log at /var/log that has the StackTrace. The Kernel panics ALWAYS when I try to modify screen brightness. Where are those Logs or StackTraces? Do I have to install any package to catch that StackTrace? Where should I send that Log/StackTrace? Thanks for reading. -- UPDATE 1 I cannot change brightness trough console: xbacklight -get and any other parameter as -dec or -inc always returns: [kangcoding@Pi2530Arch ~]$ xbacklight -set 100 No outputs have backlight property I still cannot find log files or stacktraces of this Kernel Panic. Here is a Photo: