https://bugs.freedesktop.org/show_bug.cgi?id=61533
--- Comment #9 from Eugene ken20001@ukr.net --- (In reply to comment #8)
This is most likely a mesa issue; there are several new features in mesa that are only enabled with a 3.8 kernel. Can one of you use git to bisect mesa to see what commit broke things? bisecting is a feature of git that allows you to easily narrow down what commit to a project caused the breakage. You might also try mesa from the 9.1 branch. Also, if you are using the llvm backend in the r600 driver, you might try disabling that.
I'm sorry, but I don't know how to.