hi

with a athlon xp 1800+, geforce 4 ti4200, suse 10 i'm able use 1600x1200 resolutions at 99Hz

now with a athlon 64bits 3000+, geforce 6 6100 (onboard videocard), i get only 85Hz for 1600x1200

i use a dell p1130 monitor


Section "Monitor"
DisplaySize 427 320
HorizSync 30-130
Identifier "Monitor[0]"
ModelName "P1130"
Option "DPMS"
VendorName "DELL"
VertRefresh 50-170
UseModes "Modes[0]"
EndSection

use nvidia driver for both computer

any idea?

thanks

You can try calculating a modeline for your resolution at the refresh rate you want and editing xor.conf to use that mode. Here's how to go about it. First backup your xorg.conf file to your home directory. Next open a console and run:

$ gtf 1600 1200 99

gtf is a utliity for calculating modelines that's included in most distros. Here's the output I get when running the above command:

$ gtf 1600 1200 99

# 1600x1200 @ 99.00 Hz (GTF) hsync: 125.73 kHz; pclk: 277.61 MHz
Modeline "1600x1200_99.00" 277.61 1600 1728 1904 2208 1200 1201 1204 1270 -HSync +Vsync

this is the part you are going to stick into xorg.conf:

Modeline "1600x1200_99.00" 277.61 1600 1728 1904 2208 1200 1201 1204 1270 -HSync +Vsync

You should run the gtf command on your rig as I'm not sure the output would be the same as I got; the calculation may be made with reference to your detected hardware.

Using the above as an exoample, I'd try editing xorg.conf as follows:

Section "Monitor"
DisplaySize 427 320
HorizSync 30-130
Identifier "Monitor[0]"
ModelName "P1130"
Option "DPMS"
VendorName "DELL"
VertRefresh 50-170
#UseModes "Modes[0]"
Modeline "1600x1200_99.00" 277.61 1600 1728 1904 2208 1200 1201 1204 1270 -HSync +Vsync
EndSection

Reboot and see if it comes up right. If it doesn't or if X refuses to come up at all and you are dumped to a command line login, just login as root and run:

# mv /home/<username>/xorg.conf /etc/X11/xorg.conf

to restore your previous xorg.conf file and reboot.