https://bugs.freedesktop.org/show_bug.cgi?id=73378
--- Comment #38 from Chernovsky Oleg adonai@xaker.ru --- I managed to make it work on my machine.
I actually noticed that fglrx code never puts UPLL to sleep like we do. So I commented out all WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_SLEEP_MASK, ~UPLL_SLEEP_MASK);
After that initialization finishes successfully and I'm able to watch my .mkv's with decent speed.
adonai@Heaven] % mpv --vo=vdpau --hwdec=vdpau Zoku\ Sayonara\ Zetsubou\ Sensei\ -\ 06.mkv Playing: Zoku Sayonara Zetsubou Sensei - 06.mkv (+) Video --vid=1 (h264) (+) Audio --aid=1 --alang=jpn (*) (aac) Subs --sid=1 --slang=eng (*) (ass) (+) Subs --sid=2 'Zoku Sayonara Zetsubou Sensei - 06.ass' (ass) (external) Trying to use hardware decoding. AO: [pulse] 48000Hz stereo 2ch float VO: [vdpau] 1280x720 vdpau [vo/vdpau] Compositing window manager detected. Assuming timing info is inaccurate. AV: 00:06:16 / 00:23:59 (26%) A-V: 0.000
Exiting... (Quit)
What kind of further testing can be done from my side?