https://bugs.freedesktop.org/show_bug.cgi?id=84648
--- Comment #11 from Alex Deucher alexdeucher@gmail.com --- (In reply to J0k3r from comment #10)
https://bugs.freedesktop.org/show_bug.cgi?id=89203 is probably a duplicate of this bug.
I tested it with linux 3.19 and different (git~51b43c5, 10.4.6, 10.3.5) mesa versions, but they don't seem to make a difference. So, no, a338dc01866ce50bf7555ee8dc08491c7f63b585 does not help. Even with mesa 10.3.5, where some people reported this was the the last working version for them, the hangs occured. So it's probably related to some kernel issue, too.
You might be seeing: https://bugzilla.kernel.org/show_bug.cgi?id=90741