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Old 05-31-2006, 11:04 AM   #1
Registered: Oct 2003
Posts: 74

Rep: Reputation: 15
setting refresh rate for dual display monitors

I'm running Redhat Enterprise Linux 4. I just installed a Matrox Millenium G450 AGP video card and dual display NEC Multisync LCD 2070NX monitors. Optimal resolution is 1600x1200. Each time I set my resolution to 1600x1200, spanning display, I get the following error from my monitor, "Out of range". I believe that this is probably the refresh rate. I'm not sure how to confirm what refresh rate I'm running or how to change it. Ideas on how to do this? I need to verify that my refresh rate is 60Hz. Thanks.
Old 05-31-2006, 01:03 PM   #2
Registered: Dec 2005
Distribution: just replace windows with linux
Posts: 38

Rep: Reputation: 15
please take a look into your /etc/X11/xorg.conf
look for section called "Monitor"
It should say something like that:
/* see specification in your manual: Synchronisation Range */
HorizSync 31.5-91.1
VertRefresh 56.0-85.0

Actualy the stuff should be detected automaticly (the wonders of DDC) but sometime
the vendors fail to update there eeproms so this gets sometimes wrong.
The rest should be done automaticly.

btw: if you blow your monitor it not my problem


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