[Bug 99096] [SKL] Video playback and opengl are jerky

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99096

--- Comment #8 from e90 at tuomastonteri.fi ---
The issue occurs with both xv and gl but I use xv by default.

I don't have the issue with a sandy bridge machine at all, only with 
skylake. I see the issue in 30fps content too. Pause and unpause does 
not fix here. Frame dropping is disabled in mplayer.

This is KDE desktop environment on all test machines, including the 
sandy bridge one.

I tried running X directly from console with 'startx' on the problem 
skylake machine and now the jerkiness is gone with mplayer. Instead, 
sometimes xv playback has constant horizontal tear which goes away with 
pause / unpause. With gl there is no tear.

Although there is no major jerkiness anymore without KDE I think 
playback is still not quite as smooth as with Windows but it is usable.

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