Howto: Fix Performance of ATI Drivers with Compiz on Ubuntu 9.10 Karmic Koala
Everyone know's that ATI drivers always seem to have something wrong with them, be it tearing in video or just general slow performance.
I happen to be victim to both of these currently, the way I got around video tearing was by changing my video output as I outlined in my previous tutorial, Howto:Fix ATI Video Playback. As for the performance issues I've finally found the answer! It turns out that it's got something to do with backfill we don't need to know what it is or what it does, all you need to know is getting rid of it fixes performance issues such as slow maximizing windows and also should fix video tearing!
Caution: I'd like to warn you in advance that doing anything with xserver could make your system unstable and crash you desktop interface. So do this at your own risk!
Step 1
Go to System->Administration->Software Sources, navigate to the Other Software tab and click Add... and paste in this text:
ppa:launchpad-weyland/xserver-nobackfill
Click Add Source and then Close and it will update your package list.
Note: This is a Ubuntu 9.10 Karmic Koala tutorial if you are using older version add the appropriate source from here
Step 2
Now go to System->Administration->Update Manager and you should see two new updates for xserver-common and xserver-xorg-core if not Check for updates. Then install said updates.
Once done give your PC a quick restart and you should see it has now fixed your problem.
Note: You can also do this from the Terminal by running:
sudo apt-get update && upgrade
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