Ubuntu
xserver-xorg-video-intel package

  1. Bug #1215449
  2. Comment #17

Comment 17 for bug 1215449

Revision history for this message
In , Xorg (xorg) wrote :

Interestingly, I can now make it work if I use a passive DVI->VGA adapter.

This configuration works for me (albeit with slightly imperfect quality on the VGA-connected monitor):

Monitor #1
HDMI output -> adapter -> DVI input (1600x1200)

Monitor #2
HDMI output -> adapter -> DVI input (1600x1200)

Monitor #3
DVI output -> adapter -> VGA input (1600x1200)

The 3rd one has to be VGA, or it won't work. Using a direct DVI->DVI cable is problematic.

Also, the VGA port isn't autidetected as 1600x1200 capable, but this can be fixed with:
xrandr --addmode VGA1 1600x1200
xrandr --output VGA1 --mode 1600x1200