Comment 15 for bug 742544

I have found a work-a-round for this issue using xrandr and changeing the primary monitor.

This changes primary montor to the DVI-monitor:
xrandr --output DVI-0 --primary

And this back to the VGA-monitor:
xrandr --output VGA-0 --primary

xrandr without arguments reports the names of the monitors:

root@lian:~# xrandr
Screen 0: minimum 320 x 200, current 3328 x 1152, maximum 8192 x 8192
VGA-0 connected 1280x1024+2048+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024 60.0*+ 75.0
   1024x768 75.1 70.1 60.0
   832x624 74.6
   800x600 72.2 75.0 60.3 56.2
   640x480 72.8 75.0 66.7 60.0
   720x400 70.1
DVI-0 connected 2048x1152+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   2048x1152 59.9*+
   1680x1050 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1