https://bugs.freedesktop.org/show_bug.cgi?id=73848
--- Comment #15 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #14)
(In reply to comment #13)
Also, the fact that disabling audio on a newer kernel doesn't break things
If I disable audio, shouldn't the Radeon HDMI ALSA device disappear? That didn't happen for me when I set radeon.audio=0. Am I doing something wrong?
No. disabling audio in the radeon driver just disables the audio stream in the hdmi stream. The audio device itself can't be disabled.
The audio hardware doesn't interact with the memory controller (or 3D engine for that matter) so I don't really see how it could cause a GPU page fault.
Could it be a timing issue? Audio init delays startup enough that it doesn't hit some races anymore?
If you disable acceleration (add Option "NoAccel" "true" to the device section of your xorg config) do you still get the problems? It's most likely some issue related to the 3D engine set up in mesa.