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I've had this setup since early July. The card is an AMD Radeon HD 6450 and I'm using the version of Catalyst which was provided in Jockey.

When Compiz is enabled, I get problems with laggy window movement (even with the known compiz opengl changes) and laggy scrolling. To remedy this, I simply use Classic mode with no effects. The problem here is that any video/3d/etc (except Flash stuff) will be extremely glitchy.

The window flickers and always remains in the foreground.

Example:

http://ubuntuone.com/6aQmscUdZx78SpU32jwuUK

This happens with games, movies, or just about anything regarding video playback. I'm assuming these issues are somewhat due to the fact that my GPU is fairly new.

Any help would be great :)

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closed as too localized by jrg Dec 27 '12 at 1:11

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2 Answers

uncheck /apps/metacity/general/capture_before_unmap in gconf-editor

This will solve the overlay issue in Metacity when using classic desktop with no effects with ATI.

Also add x-swat ppa to get the latest ATI drivers. In terminal paste sudo add-apt-repository ppa:ubuntu-x-swat/x-updates

sudo apt-get update

and use update manager to update your ATI driver to latest.

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Unchecking that fixed the issue. The only problem now is that there's a trail behind windows when I move them; not as smooth as when it is checked. Is there any way to remedy that? Also, I usually prefer to keep my graphics driver on the official version until I upgrade distros. But, since this is the first time I have used an AMD card, is there any compelling reason to upgrade? Major bug fixes, etc. –  newf Sep 29 '11 at 2:00
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Your card should be fully supported by the open source radeon driver in 11.04.

Give it a try now or with 11.10.

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I can't use the open source drivers yet due to horrible performance in gaming. The reason that I did get an AMD card is because I intend to use the open source drivers in the future. For now, I'm stuck with the Catalyst driver. I am quite hopeful that by 12.04 or 12.10 I won't need Catalyst. I can dream! –  newf Sep 29 '11 at 19:47
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