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

1 Like
2

Iā€™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

4

Try that script:

#!/bin/bash
DAYVALUE=1.0
NIGHTVALUE=0.6

BRIGHTNESS=$(xrandr --verbose | grep -m 1 -i brightness | cut -f2 -d ' ')

[[ "${BRIGHTNESS}" == "${DAYVALUE}" ]] && SETVALUE=$NIGHTVALUE || SETVALUE=$DAYVALUE
xrandr --listmonitors | grep "^ " | cut -f 6 -d' ' | \
xargs --replace=MONITOR xrandr --output MONITOR --brightness $SETVALUE