[Bug 30447] Re: Lockup problems with both the free xorg ATI driver and the proprietary fglrx driver, using various ATI cards

[Jos Dehaes]

It seems the new ATI drivers fix this. I have not yet tried myself. See
in the forums:

http://ubuntuforums.org/showthread.php?t=204910

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Lockup problems with both the free xorg ATI driver and the proprietary fglrx driver, using various ATI cards
https://launchpad.net/bugs/30447