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> Refresh Rate Locked!, xfree86 4.2 debian [sid] radeon 8500
post Feb 14 2004, 09:51 PM
Post #1

Whats this Lie-nix Thing?

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Member No.: 2,379

Hey guys, I have a problem with my refresh rate. It seems that it cannot go above 75hz in linux, although i know for a fact that it can go to 85 at 1280x1024. I have mangaed to do so both in linux, and in windows. but for some reason the last few times ive tried installing linux on this computer, it seems that it wont go higher that 75hz. Ive configured my xfree86 file to allow higher rates, but to no avail. this isn't just an ati issue either, i had the same problem with nvidia's geforce mx 440.
any ideas would be appreciated.
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post Feb 15 2004, 07:27 AM
Post #2

Its GNU/

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Joined: 25-July 03
From: Corpus Chrsiti, TX, USA
Member No.: 1,151

The 2 key things to look at are the driver being used by the video card and the scan and refresh rates for the monitor in the file:

/etc/X11/XF86Config (or XFConfig86-4 ... if XF86Config-4 is present, it will be used ... if not, XF86Config will be used)

The first thing to check is the listed rates, for my NEC Multisync they are as follows:

HorizSync 31.0 - 82.0
VertRefresh 55.0 - 120.0

Get the specs for your monitor ... should be available on the website or from the technical manual...and change the numbers if required.
(If you are using SUSE, you can't change these in the file itself, but you have to use sax2)

The other thing to look at is the Display driver:

Driver "ati"

Johnny Hughes
Enterprise Alternatives: CentOS, WhiteBoxEL
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