Ubuntu 20.04 LTS can't change screen brightness

Question

I use the Fn+ buttons with the -sun and +sun on them, and the brightness doesn't seem to change. I have also tried to change the brightness on the bar at the top right. Neither of these seems to work, I googled the problem, but it doesn't seem to be for Ubuntu 20.04 LTS. I could change the screen brightness when I switched to windows 10.

This is the link I was looking at but for the previous versions of Ubuntu.Will the solutions they propose still work or do I have to find another way? I cannot change the screen brightness

score 1 · Accepted Answer · answered Sep 06 '20 at 21:47

1

I found it. It was the second answer provided by Renato Miotto.

Ubuntu 20.04 brightness adjust not working

answered Sep 06 '20 at 21:47

Yumbo

33

score 1 · Answer 2 · edited May 13 '21 at 15:08

1

sudo add-apt-repository ppa:apandada1/brightness-controller
sudo apt update
sudo apt install brightness-controller

Try the above.

edited May 13 '21 at 15:08

Artur Meinild

26,018

answered May 11 '21 at 08:52

Eldhose M Peter

31
1

score 0 · Answer 3 · answered Sep 06 '20 at 10:31

0

Try installing intel graphics drivers. sudo apt install xserver-xorg-video-intel And then use xbacklight command like xbacklight -inc 25

answered Sep 06 '20 at 10:31

LearnerLearner

51

I tried but xbacklight did not seem to make a difference with brightness – Yumbo Sep 06 '20 at 12:34

Ubuntu 20.04 LTS can't change screen brightness

3 Answers3