Step 1. Click System > Administration > Hardware Drivers, and enable “ATI accelerated graphics driver”. Let is install what you need, and reboot when it says to. Then upon reboot:

Step 2. Use this command in the terminal:

sudo apt-get install compizconfig-settings-manager gnome-art usplash startupmanager

And reboot again, and your set! You can now go to System > Preferances > Advanced Desktop Effects Settings, and set Compiz Fusion how you would like. You can follow the tuturial I used in the previous guide for this, Forlong’s Compiz Fusion Customization Guide.

I did not create this guide, I am quoting Michael37 from the Ubuntu Utah Ubuntu Forums.

1. Enable fgrlx driver.Install linux-restricted-modules and restricted-manager provied in the restricted repositories:
   Code:

   sudo apt-get update
   sudo apt-get install linux-restricted-modules-generic restricted-manager

   Open the restricted drivers manager in “System -> Administration -> Restricted Drivers Manager” and select “ATI accelerated graphics driver”.

2. Install xserver-xgl package
   Code:

   sudo apt-get install xserver-xgl

3. Install compiz
   Code:

   sudo apt-get install compizconfig-settings-manager compiz compiz-core compiz-fusion-plugins-main compiz-fusion-plugins-extra compiz-gnome compiz-plugins libcompizconfig-backend-gconf libcompizconfig0

4. Reboot
5. Log in. 3D effects should be enabled!
6. Customize Compiz Fusion.
   Select System → Preferences → Advanced Desktop Effects Settings
   In the new window, General Options → Desktop Size → Horizontal Virtual Size. Set it to 4.
   The other two options have to be left at 1.

   Continue customization per Forlong’s guide at http://forlong.blogage.de/article/20…-Compiz-Fusion

via Ubuntu Utah Ubuntu Forums and Forlong’s Blog