How to turn off display backlight ONLY on a laptop?

[TertianIvy]

Hi,

I recently switched from an Acer E1-531 which had a function key set up to turn off only the backlight (display was still showing) - row 3 of this table taken from its manual. The notebook I have now is lacking that useful feature and I can't seem to find anything that will solve my issue. I searched everywhere but all replies were about turning off the screen completely (pixels included). I am using a secondary screen connected through HDMI and when I'm focusing on that, I wish to turn off the laptop's backlight.

What are your suggestions?

Thanks!

 

[Phillip Corcoran]

First suggestion: post the make and model of your new laptop 😕 -- lol

 

[TertianIvy]

It's a Lifebook E734.

 

[hang-the-9]

It may not simply have that option, you can turn down the brightness. With the backlight off you can't read anything on the screen anyway.

 

[TertianIvy]

I don't need to read it. I just want for the backlight to be off and not take time for the screen to reactivate. When I used that feature in Acer, a simple tap on the touchpad and the screen was back up in an instant.

 

[hang-the-9]

I don't need to read it. I just want for the backlight to be off and not take time for the screen to reactivate. When I used that feature in Acer, a simple tap on the touchpad and the screen was back up in an instant.

If there is nothing in the manual or key options, then seems the laptop you have can't turn off the screen the way you want it to.

 

[TertianIvy]

If there is nothing in the manual or key options, then seems the laptop you have can't turn off the screen the way you want it to.

I'll just have to live with it. Thank you all for the inputs!