You should probably try using xrandr to setup dual-head, instead of displayconfig-gtk, see http://www.intellinuxgraphics.org/dualhead.html
LarsIvarIgesund, you have the same backtrace as Vincenzo. You didn't install the debug package either?
You should probably try using xrandr to setup dual-head, instead of displayconfig-gtk, see http:// www.intellinuxg raphics. org/dualhead. html
LarsIvarIgesund, you have the same backtrace as Vincenzo. You didn't install the debug package either?