How To Fix Brightness Problem In Ubuntu 22.04 LTS

How To Fix Brightness Problem In Ubuntu 22.04 LTS

This tutorial is for you if you are having issues with the Brightness in Ubuntu 22.04 LTS.

Fix Brightness Problem In Ubuntu 22.04 LTS

There are various ways to the fix the brightness problem issues in Ubuntu 22.04 LTS. In this tutorial post on “How to fix brightness problem in Ubuntu 22.04 LTS”, we will show you some of the easiest method to fix it.

First Method To Fix Brightness Problem In Ubuntu

Open your terminal in Ubuntu and run the following command. Following command will help you to find out the name of your display.

xrandr | grep " connected" | cut -f1 -d " "

In next step, Execute the following command to change the brightness using the display name.

xrandr --output system-display-name --brightness 0.7

Don’t worry if you are unable to change the brightness setting using first method or  confused as we have another method right here for you.

Brightness Controller App To Fix Brightness Problem In Ubuntu

In this method, we will fix the brightness issues in Ubuntu based operating system using the third party software called  “Brightness Controller“. Let’s install this app first.
Run the following install the Brightness Controller in Ubuntu 22.04 LTS.

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

Run the app from the application center and control the brightness setting in Ubuntu based operating system.

Edit Grub FIle To Fix Brightness Problem In Ubuntu 22.04 LTS
You need to edit the Grub file to configure the setting and fix the brightness problem in Ubuntu. Run the following file /etc/default/grub using any favorite editor of yours. For this example, we are using geditor.

sudo gedit /etc/default/grub

You will see the file being open. Now find the exact below line.


Now, you need to change the above line to the following one:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Save the file and close the text editor and run the following command to update the grub and restart your Ubuntu.


Now, you can configure the Brightness in Ubuntu 22.04 LTS with Laptop’s dedicated control keys.

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