I'm running Debian but I experienced a similar problem and wound up
looking for a solution. Hopefully what worked for me will also work for
you..
Firstly I was running the nv driver, kde and xserver-xorg. I wanted to
get 3D acceleration happening so I switched to the nvidia driver,
restarted X with the same config file (except I changed "nv" to "nvidia"
and commented out the DRI module) and the resolution was 1600x1200, I
switched using the KDE menu to 1280x1024 and the max refresh rate was 66
which killed my eyes. My monitor section was as below:
Section "Monitor"
Identifier "Sony G520"
HorizSync 30.0 - 130.0
VertRefresh 48.0 - 170.0
EndSection
I changed the refresh and sync values to some others I found on the net
and when I restarted the xserver, at the kde login screen everything
looked great. Then after logging in the screen flashed and switched to
the poor refresh rate again and changed the positioning of the screen on
the monitor slightly.
I followed the advice of the following thread:
http://ubuntuforums.org/showthread.php?t=83973
and used this tool:
http://www.bohne-lang.de/spec/linux/modeline/
to generate a modeline for me, copied it into my Monitor section as follows:
Section "Monitor"
Identifier "Sony G520"
# V-freq: 75.00 Hz // h-freq: 80.42 KHz
Modeline "1280x1024" 151.83 1280 1360 1544 1888 1024 1024 1027 1072
EndSection
also changed the Display subsection in screen and got rid of all the
resolutions except 1280x1024:
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
restarted X and everything is working great.
--
kde changes screen refresh rate of nvidia card
https://bugs.launchpad.net/bugs/89640
You received this bug notification because you are a member of Kubuntu
Team, which is a bug contact for kde-systemsettings in ubuntu.
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