On Sat, 2009-04-18 at 23:58 +0200, Torquil Macdonald Sørensen wrote: 
> Package: xserver-xorg-video-radeon
> Version: 1:6.12.2-1
> Severity: normal
> 
> I may have the same problem, but I have not tried linux 2.6.30 since it is 
> not in
> Debian. Things are wuite slow now, e.g. only 100FPS with glxgears, compared 
> to a few
> thousand before.
> 
> After the upgrade, OpenGL support disappeared. I upgrade the newest kernel 
> available
> in Debian, which was 2.6.29, but it didn't help. Then I checked Xorg.0.log, 
> which
> complained about XAA, and said to change to EXA, which I did. After that I 
> got OpenGL
> support back, but it is really slow.
> 
> There is a strange message at the next to last line in Xorg.0.log:
> exaCopyDirty: Pending damage region empty!

That's harmless and definitely not related to your problem.


> Section "Device"
>       Identifier "Device0"
>       Driver "radeon"
>       Option "AccelMethod" "EXA"
>       Option "BackingStore" "true"

Does disabling this option help?

>       Option "ColorTiling" "true"
>       Option "EnablePageFlip" "true"
>       Option "AGPMode" "4"
>       Option "GARTSize" "128"
>       Option "Monitor-LVDS" "Monitor0"
> EndSection


> (II) RADEON(0): [drm] removed 1 reserved context for kernel
> (II) RADEON(0): [drm] unmapping 8192 bytes of SAREA 0xf8068000 at 0xb78ff000
> (II) RADEON(0): [drm] Closed DRM master.
> (WW) RADEON(0): Direct rendering disabled

Thought this looks like the most likely cause - the DRI is disabled for
some reason. Is there something agp/drm related in the kernel output?


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer



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