X on Quicksilver G4

[Jens Kutilek <jk@isitrain.de>]

Last week I got my brand new G4 ;-)
I installed Debian woody over the net, which worked like a charm, but 
now I'm stuck with the X configuration for the Nvidia card.
I compiled a new kernel using the benh source, and included the rivafb 
driver. When I boot, i have to add "video=ofonly", otherwise the display 
goes to standby on startup.
I tried to configure X using the configure script of the xserver 
package. I set the driver to fbdev. Now the only video mode that works 
is 640x480 at 256 colors.
Any hints?

bye
Jens.