Comment 22 for bug 513956

Alex,

The patches from 26302 *do* help. Quoting me from that bug:

"These patches resolve this issue completely. After a lot of automated testing
and many hours of real world use with up to date packages that include these
fixes, it no longer crashes. Thanks to everyone who helped fix this. :)

From our kernel changelog:
  [ Upstream Kernel Changes ]
  ...
  * drm/radeon/bo: add some fallback placements for VRAM only objects.
    - LP: #507148
  * drm/radeon/kms: don't print error on -ERESTARTSYS.
    - LP: #507148
  ...
"

I've not specifically testing KMS with XAA, but KMS with EXA/compiz works well now.