xrandr not working on ubuntu 19.04. How to reduce brightness below default minimum?

Question

The xrandr command to reduce brightness below minimum is not working after upgrading Ubuntu to 19.04. How can I reduce the brightness below the default minimum?

See this script: https://askubuntu.com/questions/1150339/increment-brightness-by-value-using-xrandr/1150409#1150409 also make sure you signed into with Xorg and not Wayland. — WinEunuuchs2Unix, Jun 14 '19 at 15:10

score 0 · Answer 1 · edited Aug 30 '20 at 10:12

Here is the simple step to control brightness in Linux based system

First, you have to know the monitoring screen connected you.

To know this run this command

xrandr -q

It will give useful information about the screen

( Here my screen connected to eDP, It might be different for your system )

After knowing that run the below command

xrandr --output eDP --brightness [0-10]

Replace eDP by your connected screen from the above output and you can have normal brightness values from 0.1 to 1.0

Hope it helps you

xrandr not working on ubuntu 19.04. How to reduce brightness below default minimum?

1 Answers1