Ubuntu
xserver-xorg-video-intel package

  1. Bug #745112
  2. Comment #119

Comment 119 for bug 745112

Revision history for this message
In , Martin Pool (mbp) wrote :

Forwarded from

"[arrandale] desktop is messed up with external monitors (x86_64)" [Critical,Triaged] https://launchpad.net/bugs/745112
(which has various hardware info, etc)

On a Thinkpad X201, external monitors can reliably set low-resolution modes (eg 1280x800), but at higher resolutions they apparently do not set the right sync lines and the monitor goes black.

In some cases, it works correctly if you first set a low resolution and then gradually step up, but this does not work reliably.

I can reproduce this in the current build from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/2012-01-05-precise/

Linux joy 3.2.0-997-generic #201201050433 SMP Thu Jan 5 09:34:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux