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[José Dapena Paz <jdapena@xxxxxxxxxx>]

I got hte same issue with the official natty drivers. But even also with
xorg-edgers ppa.

Current packages here:
xserver-xorg-video-intel 2:2.15.0+git20110714.212fa986-0ubuntu0sarvatt~natty
linux-image-3.0.0-5

I'm using gnome-shell, but happens also on unity and metacity (non
accelerated). The behavior degrades with time, but restarting desktop
removes most of corruptions with exception of some images that may be
cached and get corrupted.

With a specific xorg-edgers ppa version:
xserver-xorg-video-intel 2:2.15.0+git20110605.bdb396a4-0ubuntu0sarvatt~natty
and adding this configuration in xorg.conf:

Section "Device"
Identifier "Intel gpu"
Driver "intel"
Option "Shadow" "true"
Option "RelaxedFencing" "false"
EndSection

I got almost stable behavior even with gnome-shell. Corruption would
happend far later, if any. But in recent packages even this
configuration doesn't help (and the old package got removed from my apt
cache, so I lost my "stable" configuration).

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https://bugs.launchpad.net/bugs/755029

Title:
  [sandybridge-m-gt2+] Screen Corruption

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