Ok, so the problem is triggered by KDE's powerdevil. See: https://bugs.kde.org/show_bug.cgi?id=174897 However, as the author says it is not Powerdevil's fault.
I do not know if you want to keep this one open or rather have it closed. Regards -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]