"How To Fix Brightness Control Issues on Linux Laptops – Simple Guide"

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Published on September 22, 2024 5:48:31 PM ● Video Link: https://www.youtube.com/watch?v=3ZdIRzN-kHc

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In this video, I will be cover a potential fix for laptops running Linux, that do not allow you to reduce or increase the screen brightness level.

In my case, I have a Lenovo Legion with a AMD iGPU and Nvidia GPU running the latest version of Ubuntu Linux.

First, open a Terminal, and run the following command.

sudo nano /etc/default/grub

Which will open the GRUB config file in Nano, a command line text editor.

Adjust the syntax if you use another command line text editor, such as VIM.

With the file open, navigate down the GRUB_CMDLINE_LINUX_DEFAULT line and append the following to the end of the line.

"amdgpu.backlight=0"

For example, in my case, it should read.

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash initcall_blacklist=simpledrm_platform_driver_init amdgpu.backlight=0"

Do not forget to close the line with inverted commas.

Once done, save the file.

Next, run the follow command.

sudo update-grub

Or the equivalent for your Linux distribution, as Arch based distributions have a slightly different command, which will refresh your GRUB layout.

Finally, reboot the system, and on next boot, you will now be able to adjust the brightness level.

#lenovo #linux #brightness

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