Hello all,

I am using Gnome 3 for my desktop environment.
I managed to work around this tearing issue by adding the following line to my 
/etc/environment file:

CLUTTER_PAINT=disable-clipped-redraws:disable-culling

I am not sure how much does this affect the overall performance, but now
there is no visible tearing in gnome-shell.

Somewhat similar workaround has been devised for Compiz as may be seen
over at Ubuntu's Launchpad issue tracker. The tearing disappears when
the 'Force full screen redraws on repaint' option in the Workaround
plug-in is enabled.

More info for my laptop is available at the RH bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=747668

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

Title:
  [sandybridge] Graphics tearing when playing video

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