https://bugs.freedesktop.org/show_bug.cgi?id=79980
--- Comment #124 from Grigori Goronzy greg@chown.ath.cx --- I can very quickly, almost deterministically, hang the GPU (radeonsi, Cape Verde) with the following command:
LIBGL_ALWAYS_SOFTWARE=1 mpv --fs --vo=opengl:sw /path/to/some_video
this works on both 3.16.0 and 3.17rc3. Try seeking, it often happens directly after a seek. In most cases, the hang is unrecoverable and crashes the kernel after some "atombios stuck in a loop" messages. Very strange indeed, software rendered glxgears doesn't cause this.
Can anyone verify? A somewhat reliable test case might be a good start to finally fixing this.