https://bugs.freedesktop.org/show_bug.cgi?id=54129
--- Comment #7 from Alex Deucher agd5f@yahoo.com 2012-09-03 15:22:43 UTC --- (In reply to comment #6)
The problem continues up to 3.5.3. However 3.6.0-rc4 fixes the issue - graphics appear to work fine again.
Can you bisect to see what commit fixed the issue?