[Bug 85421] radeon stalled, GPU lockup, reset and failed on resume; crashed by firefox.

https://bugzilla.kernel.org/show_bug.cgi?id=85421

--- Comment #4 from Hin-Tak Leung htl10@users.sourceforge.net --- (In reply to Alex Deucher from comment #3)

GPU lockups are usually caused by a problem with the command buffers generated in the usermode acceleration drivers in mesa. I would suggest trying a newer version of mesa.

How recent should I try? I am already using mesa 10.2.8 and libdrm 2.4.58 . libdrm seems to be a more recent install on 5th Oct, both mesa 10.2.8 was already on when the lock-up happened (twice). mesa 10.3 was released around the same time as 10.2.8 .