https://bugs.freedesktop.org/show_bug.cgi?id=58372
--- Comment #8 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #7)
Created attachment 71883 [details] dmesg with drm-fixes-3.8
The dmesg message changed after merging in drm-fixes-3.8:
[drm:evergreen_vm_reg_valid] *ERROR* Invalid register 0x8040 in CS
That's a different bug. Please file a new one for that. what you are seeing is due to a change in mesa: http://cgit.freedesktop.org/mesa/mesa/commit/?id=24b1206ab2dcd506aaac3ef656a...