Created attachment 86488 [details]
dmesg-3.12-rc2-mplayer-fullscreen.log

Kernel 3.12-rc2 +
0001-drm-radeon-avoid-UVD-corruption-on-AGP-cards-using-G.patch
radeon.agpmode=8 radeon.dpm=1
Playing big_buck_bunny_480p_h264.mov in fullscreen on one of my DVI's with
mplayer I got GPU hang after some minutes. Mplayer stopped without distortions,
mouse didn't work for several seconds, all konsole windows stopped but I could
switch to console and kill mplayer there.  After that mplayer (vdpau) didn't
start until reboot.