a quick workaround for this problem is to add:
Option "TwinViewOrientation" "CRT-0 RightOf TV-0"
to the device section in xorg.conf. CRT-0 is in my case the primary monitor.
a quick workaround for this problem is to add:
Option "TwinViewOrient ation" "CRT-0 RightOf TV-0"
to the device section in xorg.conf. CRT-0 is in my case the primary monitor.