https://bugs.freedesktop.org/show_bug.cgi?id=38022
--- Comment #11 from Adam Rak adam.rak@streamnovation.com 2011-08-20 08:14:11 PDT --- I have similar experience on HD6990, usually I have horrible pixmap corruptions with random memory content. PM also doesn't work, and I have turned it off. Nexuiz works fine, but after using okular things go quite bad.