Comment # 1 on bug 90360 from Mohammad AlSaleh

Hello.

Card:Mobility Radeon HD 4570

I set those at start-up:
echo performance > /sys/class/drm/card0/device/power_dpm_state
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level

When trying to use VDPAU/UVD (e.g. with ffmpeg). The GPU soft-locks. X can be
killed remotely. But the GPU is not reset properly. GL and VDPAU don't work
after I start X again.

This bug was net present in 3.18.2.

dmesg output attached.