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Old 17th May 2008, 03:01 PM
Jongi Offline
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Posts: 1,952
Possible refresh rate discrepencies

The refresh rate reported by 3 different apps is different (screenshot attached) - nVidia driver 169.12:

Code:
nVidia settings (Gnome and KDE) - 75Hz (applied and saved to xorg.conf)
KDE Control Center - 50Hz
Gnome Screen Resolution - 51Hz
It is of concern to me because when I tried to change refresh rate from 1280x1024 to 800x600, I got an "Input Signal Out of Range". I noticed it was also trying to select a refresh rate in the 50s. When I changed (using the KDE Control Center) to 800x600 using 82Hz it changed without issue.

The thing though is that I know from past experience that 60Hz or 75Hz are the two refresh rates that work without issue across resolutions. How can I have it that everything detects 75Hz (or 60Hz)?
Attached Thumbnails
Click image for larger version

Name:	refresh-nvidia-settings.png
Views:	59
Size:	108.2 KB
ID:	16040   Click image for larger version

Name:	refresh-kde-control-center.png
Views:	54
Size:	86.2 KB
ID:	16041   Click image for larger version

Name:	refresh-gnome-screen-resolution.png
Views:	60
Size:	23.0 KB
ID:	16042  
Attached Files
File Type: txt xorg.conf.txt (1.9 KB, 52 views)
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  #2  
Old 18th May 2008, 02:00 PM
Jongi Offline
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While the different apps still show different refresh rates, the below added to the Devices section of the xorg.conf file means I can change freely between resolutions now

Code:
Option "ModeValidation" "NoXServerModes"
Thanks to this thread.
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