Screen brightness and night light

Basic Help & Support Applications
1

hello everyone
Where can I find the menus to adjust the screen brightness and set the night light ?

Thank you

2

I’m no expert, but if this is a laptop, your hardware buttons should offer some control. Otherwise, you can use software like xranr to increase your gamma, but that can screw up the colors for everything easily.

3

Yes, it"s a laptop, but as you know, the brightness keys control the laptop monitor, LOL, but not the external monitor I"m using.
I can use the controls built into the latter but they are definitely uncomfortable.

I"ll try xranr textually

Thanks