Ubuntu 10 series long time now and the release of the April 2010 issue on the hardware drivers, especially for VGA ATI Radeon still not solved by default. But I was just googling and get a way to install the driver FireGL / Radeon for X (fglrx) if anyone asks what use fglrx driver, it is to play the game or emulator such as dolphin
Run terminal and type the following command and reboot afterwards.
sudo apt-get install fglrx
when it rebooted, go to terminal again and type this command:
sudo aticonfig --initial
to uninstall just type this command
sudo apt-get remove fglrx