https://bugs.freedesktop.org/show_bug.cgi?id=81644
--- Comment #91 from Michel Dänzer michel@daenzer.net --- (In reply to comment #89)
Could someone please fix this already? Mesa 10.2.x, 10.3-RC and git are simply unusable on 7770.
I'm sorry to hear that. We're working on it, but since we haven't been able to reproduce these issues, we need your help for testing: Does the environment variable R600_DEBUG=nodma help? If not, can you try if Mesa 10.1 is stable for you, and if so, bisect between 10.1 and 10.2?