What graphic card drivers to install in Ubuntu 10.04?
Solution 1:
First, be sure of your graphic card by checking in Terminal.
lspci -nn | grep VGA
If the system shows you that None known.
, you've to use Fglrx Driver.
However, if the system supports the type of graphic system you use, for HD 4xxx / R700 based cards according to you stated, it can easily be installed using System => Administration => Hardware Drivers.
Restart xserver by logging out and back in, or typing sudo /etc/init.d/gdm restart
.Check status flag
glxinfo | grep "direct rendering"
Check functionality by invoking glxgears.
$ glxgears
Change overlay type to Xvideo if video upscaling looks blocky.
$ sudo aticonfig --ovt=Xv
fore more, you can take a look at Ubuntu Documentations,and this guide