Comment 12 for bug 346028

Ok, was able to fix it.

I believe what Martin wrote a couple of posts above is correct, but only for cards that are no longer supported. To find out if your card is supported, go to the ATI site (http://ati.amd.com/support/driver.html) and try to find a driver for your card. If the driver offered is the 9.4 version, then the proprietary driver should work for your card.

However, after upgrading to Jaunty I was experiencing the same problem described in this issue. To cut a long story short, it turns out that my xorg.conf (working fine with the proprietary driver on Intrepid) was no good for this new version.

Everything works ok now, after regenerating xorg.conf with the command below, and rebooting.

/usr/bin/aticonfig -initial