Bug#444830: xserver-xorg-video-ati: Updates on second head of ATI FireGL Mobility T2 interfere with image on first head
Cameron McCormack wrote:
> Package: xserver-xorg-video-ati
> Version: 1:6.6.193-3
> Severity: important
> After doing a dist-upgrade recently, my dual-head setup fails to work.
> I have a Thinkpad T41p with an ATI FireGL Mobility T2 inside it, and an
> LCD monitor plugged in as the second head. When starting X using the
> xorg.conf below, the second head starts off blank. Doing a
> 'DISPLAY=:0.1 xrandr -s 0' gets it displaying, but whenever any painting
> happens on the second head it is not performed correctly, and it also
> messes with the image on the first head.
If 6.6.193 does not work for you, you should either revert to the old
6.6.3 or upgrade to new 6.7.194 in experimental. The 6.6.x branch is
dead anyway, so this exact problem won't be fixed.
The 6.7.x branch contains RandR 1.2 which provides dynamic configuration
of multiple heads. You'll have to update your xorg.cong (remove
MonitorLayout, Xinerama, and use single Monitor/Screen/Device sections)
and try the xrandr command to use RandR 1.2. See
http://bgoglin.livejournal.com/10214.html and maybe