Question How to not turn on laptop monitor when external monitor is powered off?

[FranklinH]

Hi all, so i'm currently connecting my laptop to an external monitor via mini DP to DP cable, and I am using "Show only on 2" in display settings to only use my external monitor.

When I was using HDMI to HDMI cable before, whenever I turn off my external monitor, my laptop screen won't turn on (which is exactly what I want) . But now since I switched cables (to fully utalise my monitor), my laptop screen would light up whenever I power off my external monitor (as it seems to my laptop that the monitor is disconnected, rather than just turned off).

Is there a way to not turn on my laptop screen when I power off my external monitor? Or is this going to be an effect of using mini DP to DP cables? Any help is appreciated

 

[Eximo]

You could have the laptop lid shut? Go in to power options and set the behavior of the computer to not shut off when the lid is closed. I believe you can make a distinction between it being plugged in or not, so that you can have normal behavior when you are mobile.