Bug#446304: xserver-xorg-video-ati: output corruption with gl apps on R300

[Alexej Davidov <alexej.davidov@gmx.net>]

On Thu, 11 Oct 2007 23:40:46 +0200
Brice Goglin <Brice.Goglin@ens-lyon.org> wrote:

> Alexej Davidov wrote:
> > Package: xserver-xorg-video-ati
> > Version: 1:6.7.195-2
> > Severity: important
> >
> > I've already asked about this bug on the xorg list but got no
> > response. So this might actually be a Debin bug.
> >
> > Recently the output of any GL application (glxgears, googleearth,
> > nexuiz) is completely corrupted.
> >   
> 
> What does "recently" mean? When did the problem appear? Can you go
> back to earlier versions to find out?
> 
> > Section "Device"
> >     Identifier               "radeon"
> >     Driver                   "radeon"
> >     Option "DynamicClocks"   "true"
> >     Option "AGPMode"         "4"
> >     Option "AGPFastWrite"    "no"
> >     Option "EnablePageFlip"  "true"
> >     Option "NoAccel"         "false"
> >     Option "RenderAccel"     "true"
> >     Option "AccelMethod"     "XAA"
> > #    Option "AccelMethod"     "EXA"
> >     Option "AccelDFS"        "true"
> >
> >     Option "XAANoOffscreenPixmaps" "true"
> >
> > #    Option "DRI" "false"
> >     Option "GARTSize" "64"
> >     Option "AGPSize" "32"
> >
> >     Option "Monitor-LVDS" "Thinkpad Display"
> > EndSection
> >   
> 
> Can you try disabling most of these options?

Disabling DRI helps. Either by setting NoAccel to true or setting DRI
to false.

It's actually a bug in mesa. Downgrading to
libgl1-mesa-{glx,dri} from 7.0.1-2 to 6.5.1-0.6 solved the problem.

I'll file a bug against those then.

Regards,
A.