Some more details: * the distorted X11 screen on output LVDS1 seems only to happen with simple window-managers like fvwm2 and jwm, but not with a desktop-environment xfce.
This is bad because I have not found a replacement for fvwm2, which is as configurable like fvwm2. I use fvwm2 constantly. * Also this Problem occures, when using VGA1 instead of DP1. :( Regards. 2016-01-06 16:40 GMT+01:00, x201-user <x201userbugrep...@gmail.com>: > Package: src:linux > Version: 3.16.7-ckt20-1+deb8u2 > Severity: important > > Dear Maintainer, > > ** What led up to the situation? > Installing a plain debian jessie on a Laptop Lenovo X201, > connecting a external screen and > boot the system. > > > ** How to reproduce on running system: > 1.) enable second screen > xrandr --output LVDS1 --auto --primary --output DP1 --auto --above LVDS1 > 2.) Switch screens via dpms to off > xset dpms force off > 3.) move mouse to awake screens and look into dmesg to see kernel call > trace > ...
