ubuntu-x-swat team mailing list archive

[Dave Lentz <dtl131@xxxxxxxxx>]

Mesa 7.6 has the new r600 DRI driver (with 3D hardware acceleration).
AFAIK, this driver still needs special DRM kernel modules (from Alex
Deucher's branch of DRM: http://cgit.freedesktop.org/~agd5f/drm/?h=r6xx-
r7xx-3d ).

If you want to test this out, try mesa 7.6 again and temporarily move
the file /usr/lib/dri/r600_dri.so Now when you start X, mesa should fall
back to using the DRI software rasterizer (check glxinfo) and your
system should work normally.

You could also build your own DRM, though the r600 DRI probably isn't
ready for "stable" use. If you want to experiment, see:
http://ubuntuforums.org/showthread.php?t=1257453

Note that this bug is probably a duplicate or very closely related to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/419126

-- 
X server fails with DRI : drmRadeonCmdBuffer: -22
https://bugs.launchpad.net/bugs/419434
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which is the registrant for xserver-xorg-driver-ati.