https://bugs.freedesktop.org/show_bug.cgi?id=28995
--- Comment #15 from Marek Olšák maraeo@gmail.com 2010-08-07 15:47:10 PDT --- It looks like you don't have enough memory and the memory manager is fighting with it. Nevertheless, r300g should not submit a hardlocking CS no matter how much memory you have. I'll see what I can do.