ATI Radeon 2100 Grahics Problem

[stevepetmonkey]

Hello,
I have installed Ubuntu 9.1 on a new machine with an Asus M2A74-AM SE Motherboard, this has an integrated ATI Radeon 2100 Graphics Processor and I am getting slightly flickering/wobbling screen :(
I am loving Ubuntu apart from this problem so any help on changing the driver would be good, a few more details:

Ubuntu 9.1 (All updates applied)
ATI Radeon 2100
Max shared memory 256MN
Supports RGB max resolution of 2048x1536 @85 Hz


Not sure what this commands means but when I enter them I get this:
reece@reece-desktop:~$ glxinfo | grep vendor
server glx vendor string: SGI
client glx vendor string: SGI
OpenGL vendor string: DRI R300 Project
reece@reece-desktop:~$

also:
reece@reece-desktop:~$ glxinfo | grep "direct rendering"
direct rendering: Yes
reece@reece-desktop:~$

Please help, I really don't want Windows on my PC.
Steve.

P.S. I am a totally new to Linux.

[MelDJ]

have you installed the drivers from hardware drivers?
if you did, i suggest you remove them and get the drivers from the ati website

[stevepetmonkey]

have you installed the drivers from hardware drivers?
if you did, i suggest you remove them and get the drivers from the ati website

The driver was installed with the OS.
I have looked on ATI website and cannot find a Linux driver.
???
How do I install from hardware drivers?

[Yellow Pasque]

Your card is no longer supported by proprietary ATI drivers.

[stevepetmonkey]

Your card is no longer supported by proprietary ATI drivers.

So how do I tweak the one on the system then? Can't seem to change the refresh rate, perhaps that would help?

[Yellow Pasque]

So how do I tweak the one on the system then? Can't seem to change the refresh rate, perhaps that would help?
What?

[stevepetmonkey]

What?

How do I change the settings so the graphics card works better with Ubuntu?