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I am currently using a 21"FD Premium Sun Microsystems monitor. For running of experiment purposes, I would like to set the refresh rate for the monitor to at least 100hz if possible. Any clues out there?

My current graphics card is nVidia Quadro 2200.

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  • First off, your monitor likely doesn't support that refresh rate, and you'll end up with a non-working setup (best case scenario) or a fried monitor (worst case scenario).
    – Daniel
    Jan 11, 2016 at 4:14
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    But for the cause of science, I'll answer.
    – Daniel
    Jan 11, 2016 at 4:14

1 Answer 1

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xrandr should do the trick nicely.

First, compute your modeline for your resolution and refresh rate:

cvt 1600 900 75

(Here I'm assuming 1600x900@75Hz. Make sure you change that if yours is different.) Then create a new mode with xrandr:

xrandr --newmode "1600x900_75.00"  104.00  1600 -hsync +vsync

Add the new mode to xrandr:

xrandr --verbose  --addmode VGA-0  "1600x900_75.00"

Then enable it:

xrandr --output VGA-0 --mode "1600x900_75.00"

Note that your values will be different. Run xrandr with no arguments to find out the name of your monitor and use that instead. Running xrandr -q will display a list of available outputs.

Here's some more information on xrandr.

Thanks to this answer for the nitty gritty details.

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