I'm trying to install ubuntu linux, and when it gets to the point where it's the first time I log on, it tries to start x server without success. I get an error:

Failed to start the X server


It gives me the option to check the log, and when i scroll to the bottom of it this is what i see:

ATI Mach64 in slot 5:0:0 could not be detected
ATI Mach64 in slot 5:0:1 could not be detected

No devices detected

Fatal server error:
no screens found



To make matters worse, i can't get root access! The installation never prompted me for a root password (maybe that part of the installation happens after x is started). When i enter su command it asks for root password, and i tried using the same password as the account i created, and a blank password, but it won't work. This makes in almost impossible to do anything at all.

Here is my list of hardware:
athlon64 3000
dfi lanparty nf4 ultra-d
1gb corsair value ram
ati x800xl pci-e
audigy 2zs
hauppauge tv tuner
hitachi cml174 lcd monitor

I'm using the amd64 version of ubuntu 5.10. Can anyone help?

Nevermind, got the fix in another forum. Had to change the driver from 'ati' to 'radeon' in xorg.conf