https://bugs.freedesktop.org/show_bug.cgi?id=81644
--- Comment #12 from Michel Dänzer michel@daenzer.net --- (In reply to comment #11)
I'm guessing as of this patch this can be closed? http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ ?id=2062afb4f804afef61cbe62a30cac9a46e58e067
No, that's unrelated.
BTW, the backtraces in Xorg log files aren't useful for diagnosing this kind of problem, so there's no point in attaching more Xorg log files just for that.