Quote Originally Posted by deadite66 View Post
i tried changing /sys/class/drm/card0/device/power_dpm_force_performance_level but it won't budge off auto, so nothing in place.
That option is about DPM, not about UVD.

http://www.botchco.com/agd5f/?p=57

BTW not sure why that is not working for you, maybe it is not supported on all chips...