Public bug reported:
I'm not sure if this is a duplicate of #38198 or #34435, since both of
those bug reports only mention buttons and scrollbars. In my case, it's
the whole screen that gets covered in offset rows of colored dots. I
tried to take a screenshot of it, but the screenshot was correct. I
don't know what the mechanism of taking a screenshot is, but it seems
like it's some corruption directly on the card. It happens in every app,
but it's especially noticeable in firefox. When it happens the coverage
of dots is so bad it's difficult to read the text of a web page. One
more note, in firefox if the page gets corrupted, I can move up or down
in the page and the corrupted part moves with it. Any part that was off-
screen before is not corrupted when I scroll. RenderAccel == off seems
to have cleared it up.
Derek
** Affects: xserver-xorg-driver-ati (Ubuntu)
Importance: Untriaged
Status: Unconfirmed
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Video corruption with Xorg radeon driver
https://launchpad.net/bugs/52111
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