This brief guide explains how to control the brightness using Brightness Controller application in Ubuntu and its derivatives such as Pop!_OS, Linux Mint and Elementary OS.
Of course, there is also a CLI utility called "xrandr" that makes this job much easier from command line. For those who prefer GUI-based applications, "Brightness Controller" might be a good choice.
Brightness Controller app is used to control the brightness of your display, save a color profile, and load a profile from the saved list. It is completely free, open source and is written using "Python" programming language.
Install Brightness Controller In Ubuntu
The developer has made a PPA for Ubuntu and its derivatives. So, installation won't be a big deal. To install it, run the following commands one by one:
$ sudo add-apt-repository ppa:apandada1/brightness-controller $ sudo apt-get update $ sudo apt-get install brightness-controller
Please be mindful that it is compatible with python2 only.
Control The Brightness Using Brightness Controller App In Ubuntu And Derivatives
The usage is absolutely easy. Once installed, launch "Brightness Controller" from Menu. This is how the default interface looks like.
Just move the vertical sliders up or down to adjust the brightness.
If you have four displays, then you can install simpler version of Brightness Controller to have four four display brightness sliders, one for each.
$ sudo add-apt-repository ppa:apandada1/brightness-controller $ sudo apt-get update $ sudo apt-get install brightness-controller-simple
Here is how simpler version of Brightness Controller looks like.
And, that's all for now. Make your display more friendly to your eyes using "Brightness Controller" in your Ubuntu desktop.