If you are using xf86-video-ati from git, you can try disabling
tiling. Add:
Option "ColorTiling2D" "False"
in the device section of your xorg.conf
I added a 20-radeon.conf to xorg.conf.d with this content:
ephraim@errorl:~$ cat /usr/share/X11/xorg.conf.d/20-radeon.conf
Section "Device"
Identifier "TheCard"
Driver "radeon"
Option "ColorTiling2D" "False"
EndSection
And found this in Xorg.0.log:
[ 2219.770] (**) RADEON(G0): Option "ColorTiling2D" "False"
[ 2219.771] (II) RADEON(G0): KMS Color Tiling: enabled
[ 2219.771] (II) RADEON(G0): KMS Color Tiling 2D: disabled
But it changed nothing regarding 3D glitches.
You can also try mesa 8.0.5.
Should I downgrade to ver. 8.0.5?? I though that xf86-video-ati needs
mesa 9.X.X ??
Greetings,
Thilo
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