https://bugs.freedesktop.org/show_bug.cgi?id=64867
--- Comment #10 from Harald Judt h.judt@gmx.at --- With current up-to-date git versions of libdrm, mesa, xorg-server and xf86-video-ati, the R600_DEBUG=nodma hack no longer seems necessary (linux-3.11.0-rc6 with UVD disabled); the GPU faults have vanished and the system is stable.