[plug] Changing refresh rate to something higher than 85Hz??

[Ari Finander]

Hi all,

I'm not having any luck getting a refresh rate higher than 85Hz. I have a Viewsonic E95 19" CRT monitor plugged into a Riva TNT2 PCI card that, according to its specifications, should be able to do 1280x1024 @ 88Hz and 1024x768 @ 116Hz. WinXP Home puts it up to 100Hz without issue at 1024x768. I confirm this with the monitor's own reporting using the OSD. When I switch to Fedora Core 2 (using my KVM switch) the refresh rate drops to 85Hz regardless of resolution.

I tried using a modeline generator with the hrefresh 30-95KHz and vrefresh 50-180Hz with a resolution of 1024x768 @ 100Hz without success (I added the modeline to the monitor section of xorg.conf as instructed by the generator):

Modeline "1024x768 at 100" 126.64 1024 1056 1536 1568 768 781 794 807

Restarting the xserver went fine, but the refresh rate was still only 85Hz. Switch over to Windows, and the refresh goes up to 100Hz at the same resolution.

xvidtune allows me to cycle through resolutions and move the screen position around, but not increase or decrease the refresh rate. system-config-display doesn't even permit me to set the resolution to 1280x1024 (which I've been using previously), let alone change the refresh rate.

It pisses me off that something can be so easilly accomplished using windows but despite a couple of tools built into FC2 I can't get my refresh rate up where I'm comfortable using my monitor!

Do any of you have any tips or ideas on how to fix this problem?

Cheers,

Ari


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