Video driver problem on upgrade to Hardy

[Paolo]

NoOp wrote:
> You'll probably want to put xserver-xorg-video-ati back.

Yes, it's there.

> 
> However, for your screen resolution:
> 
> Applications|Other|Screens 

No such option. I have Applications | Other | ATI Catalyst Control Center
(which says Problem ... No ATI graphics driver is installed, or the ATI driver 
is not functioning properly...)

and Graphics if System|Preferences|Screen
> Resolution isn't working.

When I try to go there, I get the message: "The X Server does not support the 
XRandR extension. Runtime resolution changes to the display size are not available."

- - -

At present the screen is running at the right resolution, but *extremely* slowly.

Paolo