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Old 23rd February 2009, 01:51 AM
vmstr Offline
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Join Date: Feb 2009
Posts: 28
Screen Refresh Rate?

Not sure if this is the right place for this thread, so please point that out if it's not.

I have a f10 64bit, a 1280x800 screen and an nvidia 84000 gpu, which is beyond adequate for Fedora's purposes I think. What I don't get it that when I go to system>preferences>harware>screen res, the max refresh rate is only 60 Hz whereas I thoght Fedora could go much higher.
Question is, is this refresh rate normal for my screen? Or can I make it go higher, say 85 Hz?
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Old 23rd February 2009, 01:13 PM
LaKing Offline
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Join Date: Nov 2004
Location: Budapest
Posts: 320
If you use a flat panel, TFT monitor, you should leave it as it is.
if you have a big old CRT monitor, you may want to change it, but i think there are no CRT monitors with that resolution. ...

It is normal, no need to make it higher.
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Old 23rd February 2009, 08:54 PM
Hlingler Offline
Join Date: Sep 2006
Location: Connellsville, PA, USA
Posts: 11,307
Use xrandr utility to check available screen resolutions and refresh rates:
xrandr -q

Current marked with asterisk. To change on-the-fly:
xrandr -s ABC[D]xEFG[H] -r XY.Z

EDIT: Takes effect immediately when you press <ENTER>.


Last edited by Hlingler; 23rd February 2009 at 08:59 PM.
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Old 23rd February 2009, 09:02 PM
sideways Offline
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Join Date: Oct 2004
Location: London, UK
Posts: 4,999
best use the nvidia driver and nvidia control panel to setup nvidia graphics.

Nvidia driver requires a flag to be set in xorg.conf to enable certain xrandr features.
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Old 23rd February 2009, 11:04 PM
AdamW Offline
Fedora QA Community Monkey
Join Date: Dec 2008
Location: Vancouver, BC
Posts: 4,327
As LaKing says, LCD displays have a native refresh rate just like they have a native resolution. You should only ever use that refresh rate setting. LCD displays don't work like CRTs.
Adam Williamson | awilliam AT redhat DOT com
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
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Old 24th February 2009, 02:27 AM
vmstr Offline
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Join Date: Feb 2009
Posts: 28
yes, I do use an LCD monitor (well, a laptop screen).
So I'll just leave it as is. Thanks for al the replies guys.
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refresh, refresh rate, screen

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