After I managed to fix problems with wireless and graphics, I ran into a problem with KDE(nothing too serious). I have a laptop and often it is plugged into an external monitor via HDMI. This works without problems. Installed system is Debian jessie The problem is following. I go to display configuration and I turn off the laptop monitor. It should switch to an external monitor and it does for about 3 secs and than it turns on the laptop monitor back on and reports Executable: kded4 Segmentation fault Can anyone shed any light on the matter.