https://bugs.freedesktop.org/show_bug.cgi?id=66942
--- Comment #3 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to comment #2)
probably a duplicate of bug 66551.
Probably not, the bug happens prior to the commit identified in bug 66551. I'm bisecting as we are talking.
I also noticed a small glitch that was not in kernel 3.9 but is present in 3.10 that I'll report in another bug.