https://bugs.freedesktop.org/show_bug.cgi?id=84500
--- Comment #17 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to Alexandre Demers from comment #16)
It may be related to general GPU crashes seen other bugs: while bisecting, I hit a loop of GPU resets just after logging in until I rebooted.
Refering to commit 3c2ea70 (for trace purpose)