[CentOS] X Error: Nvidia Onboard - Supermicro

Fri Dec 8 01:28:06 UTC 2006
Karl R. Balsmeier <karl at klxsystems.net>

Howdy all,

Any recommendation as to the right way to config X.  Last time I did was 
using X86Setup back in OpenBSD 2.7 days.

What's the Xorg tool?  How do I invoke it?  Looks like I just need to 
fix the ranges, maybe they mean sync vert & horiz or something.

Or should I be typing gdm instead of startx?

Any advice? -below are some errors, infos, although the dmesg didn't 
pipe out the darn video card name, it's an onboard Nvidia, and the erros 
says RADEON, which is Dianmod/ATI from what I remember.

# from /var/log/messages

Dec  7 14:38:48 devbox02 kernel: mtrr: type mismatch for 
f0000000,1000000 old: write-back new: write-combining

#from startx command:

X Window System Version 6.8.2
Release Date: 9 February 2005
X Protocol Version 11, Revision 0, Release 6.8.2
Build Operating System: Linux 2.6.9-34.0.2.EL x86_64 [ELF]
Current Operating System: Linux devbox02.mycorp.net 2.6.9-42.ELsmp #1 
SMPTue Aug 15 10:35:26 BST 2006 x86_64
Build Date: 23 August 2006
Build Host: mehak.karan.org
Before reporting problems, check http://wiki.X.Org to make sure that you 
have the latest version.
Module Loader present
OS Kernel: Linux version 2.6.9-42.ELsmp (buildcentos at mehak.karan.org) 
(gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)) #1 SMP Tue Aug 15 
10:35:26 BST 2006
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Thu Dec  7 17:21:19 2006
(==) Using config file: "/etc/X11/xorg.conf"
(WW) RADEON(0): Failed to set up write-combining range 

waiting for X server to shut down