https://bugs.freedesktop.org/show_bug.cgi?id=60802
--- Comment #13 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to comment #12)
I got this too, but this was already there before I updated to the 3.8.0 kernel. So I think it has nothing to do with this problem.
Thanks for letting me know. I may know an already opened bug about it...