[Bug 81579] VDPAU: videos slow to a crawl when more than 1 video is playing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81579

Christian König <deathsimple at vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #7 from Christian König <deathsimple at vodafone.de> ---
>[    1.093019] == power state 2 ==
>[    1.093019] 	ui class: none
>[    1.093020] 	internal class: uvd 
>[    1.093021] 	caps: video 
>[    1.093022] 	uvd    vclk: 48000 dclk: 38000
>[    1.093023] 		power level 0    sclk: 50000 mclk: 80000 vddc: 1000
>[    1.093024] 		power level 1    sclk: 50000 mclk: 80000 vddc: 1000
>[    1.093025] 		power level 2    sclk: 50000 mclk: 80000 vddc: 1000

The power table indeed has only a single UVD performance level and that doesn't
looks like it is suitable for handling two 1080p streams at the same time.

You need at least a vclk of 533Mhz and a dclk of 400Mhz for that. You can try
to hack into the kernel and overclock the UVD block, but I don't advise to do
so. OEMs usually have a good reason for limiting the clocks to a lower level.

Anyway that's clearly not a driver bug, cause the kernel does what it is
supposed to do.

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