How to turn on the keyboard LED on Linux.
To proceed, we will use the Brightnessctl tool. Brightnessctl is a command-line tool on Linux systems that allows you to control the brightness of screens and monitors.
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#Ubuntu/Debian:
sudo apt update
sudo apt install brightnessctl
#Fedora:
sudo dnf install brightnessctl
#Arch Linux:
sudo pacman -S brightnessctl
Usage instructions:>
Execute the following command to list available brightness devices. This will display a list of brightness devices on your system. Select the number corresponding to Scroll Lock
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brightnessctl -l
Once you have identified the input number for Scroll Lock, use the command ‘brightnessctl — device=’input2::scrolllock’ set 1’ to adjust the brightness. Replace [2] with the input number you identified:
After executing the above commands, the keyboard LEDs lit up automatically.
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