Turn off only one monitor

[HyperHacker]

I have two monitors connected to a GeForce 6200 (DVI and VGA) using TwinView. I can call "xset dpms force off" to turn off both, but how can I turn off just one? xset doesn't seem to see two different screens, even though most other programs do.

[chungy]

Try xrandr.

Find out what display is called what with plain "xrandr", then use "xrandr --output VGA --off" (example, change "--output VGA" as necessary) to turn that display off.

[HyperHacker]

It just shows one big screen.

Screen 0: minimum 2960 x 1050, current 2960 x 1050, maximum 2960 x 1050
default connected 2960x1050+0+0 0mm x 0mm
2960x1050 50.0*