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[Bug 751817] [NEW] lots of flashing on second monitor


Public bug reported:

Binary package hint: compiz

I'm not sure this is a compiz bug or a problem with something else in
the graphics stack.  I just upgraded to Natty on a machine with a Radeon
HD 4670:

$ lspci | grep -i radeon
04:00.0 VGA compatible controller: ATI Technologies Inc RV730XT [Radeon HD 4670]

This card has two Dell 20" flat panels attached.  While everything looks
okay, I get constant flashing on the second monitor.  About every 30
seconds or so, the right screen just flashes, even when I'm not doing
anything on the machine.  I see no such flashing on the left screen.

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

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  lots of flashing on second monitor

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