compiz team mailing list archive

[Baughn <755841@xxxxxxxxxxxxxxxxxx>]

(In reply to comment #72)
> Just as an update from the past post.
> 
> Unfortunately, all my attempts for fixing this properly have failed so far, the
> hardware does not wants to collaborate with the software for inter-ring
> synchronization.
> 
> So the workaround I used previously still applies - I need to disable
> compositing and use either vaapi or gl rendering, which perform vsync'ed screen
> updates. This way, I see no tearing.

I have no tearing on GL in fullscreen.

I do, however, have tearing for very simple GL code in windowed mode
(fill window black, flip, fill screen white, flip - tearing is painfully
obvious), mplayer -vo gl in both windowed and fullscreen mode (since its
"fullscreen" is actually a screen-covering window and doesn't trigger
the same mechanism), and mplayer -vo xv in all modes.

This is with all compositing turned off *and* using a window manager
that doesn't support in anyway, by the way.

vaapi might possibly work, but mplayer doesn't support it. (I know about
the mplayer-vaapi patch; it hasn't worked with modern mplayer(2) code
for some time, sorry.)

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https://bugs.launchpad.net/bugs/755841

Title:
  [sandybridge] Graphics tearing when playing video

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