How to turn off laptop screen when using external monitor?

[xan]

My notebook is supposed to have a keyboard sequence that switches between notebook screen, external monitor and both working at the same time (FN key + F8).

This works in Windows but not in Puppy, both just stay on. I want to switch the notebook screen off. Is there a way?

[ariel]

type this in a console:

Code: Select all

xrandr --output LVDS1 --off