X windows and gdm on Dell/fedora

[dmcglone at san.rr.com]

Two questions.

1) I'm having great problems getting a new Dell Dimension 8300 (newly isntalled
Fedora Core) to run X windows (gnome). It has a Nvidia GEForceFx 5200 card and
a Dell 1703 FPt flat panel monitor. When I try to run it I get a "Can't Display
This Mode" message.  I've changed the HorizSync and VertRefresh lines in the
XF86Config file to match those in the monitor's manual, but that didn't help.
I've also made sure the mode line matches the monitor's capabilities.

I only have the default (nv) driver for the card, but I think I'd get some kind
of image even with that. So far no luck. Can anyone help?

2) That brings up question 2:  how do I keep the system from trying to run gdm
on startup. I'm able get out of it by pressing ctrl-alt-backspace, but I have
to that repeatedly and it's very annoying. I've looked through the /etc/rc.d
directory but I can't see what's trying to run gdm.

thanks,

Mark Mcglone
dmcglone at san.rr.com