https://bugs.freedesktop.org/show_bug.cgi?id=105251
--- Comment #62 from Michel Dänzer michel@daenzer.net --- (In reply to Benjamin Hodgetts from comment #61)
[...] this problem has changed in how it manifests itself. Previously you'd get the "[gfxhub] VMC page fault" messages. Now it manifests itself in considerably more serious looking errors (with none of the "VMC page faults" in sight).
That might be a different issue, please file a separate report about it.