https://bugs.freedesktop.org/show_bug.cgi?id=88183
--- Comment #25 from Michel Dänzer michel@daenzer.net --- (In reply to Alexandre Demers from comment #24)
To my knowledge, since I've had this video card (a few months), I've been dealing with VM faults.
Note that I'm referring specifically to the VM faults triggered by your apitrace from comment 5. A VM fault by itself is a generic symptom which can be caused by many different things, it's more or less the equivalent of a CPU segmentation fault.
However, are VM faults only related to mesa or can they come from somewhere else (drm)?
The Mesa driver is most likely in general, though in this particular case it could also be e.g. libdrm_radeon calculating the surface parameters incorrectly.