Firstly, sorry for the vagueness of the comment I am about to make.
While looking through kernel and freedesktop radeon bugs a while ago I
came accross a screenshot that matches the description in this bug. I
can't remember the exact hardware the reporter was using, but the
problem had been fixed with a patch. Unfortunately I can't remember
which kernel version had the fix, but it was before the currently-under-
development 3.6, so I suggest trying Ubuntu 12.10 "Qantal Quetzal" beta
2 which is based on the upstream 3.5 kernel.
Please let us know whether the problem occurs or not on Ubuntu 12.10
"Qantal Quetzal" beta 2.
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/692755
Title:
Corrupt graphics on resume from S4
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