Changing the refresh rate of my LCD

August Karlstrom fusionfive at
Sun Oct 16 20:58:56 UTC 2005

Behrang Saeedzadeh wrote:
> In the "Screen Resolution Preferences" dialog box I have only one option 
> for the refresh rate of my LCD which is 60Hz, but I know that my LCD 
> supports higher refresh rates. How can I set the refresh rate to one of 
> these higher values?

Look for `Section "Monitor"' in /etc/X11/xorg.conf and set the upper 
limit of VertRefresh to the maximum vertical refresh rate of your 
monitor. If that alone doesn't work, try to set an explicit value in the 
Modes setting in `SubSection "Display"' of `Section "Screen"', for instance:

    Modes   "1280x1024 at 75" "1024x768" "832x624" "800x600" "720x400" 
"640x480" "1x1"


More information about the ubuntu-users mailing list