ScrollLock Monitor Service

A systemd service that monitors the brightness of the Scroll Lock LED and ensures it remains turned on by setting the value inside the file /sys/class/leds/inputX::scrolllock/brightness to 1 whenever it changes back to 0. This is designed to work with any inputX::scrolllock device.

This is made mainly to turn on the RGB backlight of cheap keyboards that use ScrollLock key to turn the RGB leds on(if you are using x11 you can just use xset led on/off to control leds). On many Linux distributions, the Scroll Lock is disabled by default, since there is no xset led alternative for Wayland, I use this script. While you could manually edit the file, it resets to 0 whenever you press NumLock or Caps Lock.

Installation

1. Clone the repository and Run install.sh with sudo privileges:

git clone https://github.com/zero-stacks/ScrollLock_Monitor_Service.git
cd ScrollLock_Monitor_Service
sudo sh install.sh

This script performs the following actions:

• Creates a monitoring script (/usr/local/bin/scrolllock_monitor.sh) to keep the Scroll Lock LED brightness set to 1.
• Creates a systemd service (/etc/systemd/system/scrolllock-monitor.service) to run the script at startup.
• Enables and starts the service.

Uninstallation

1. Run uninstall.sh with sudo privileges:

sudo sh uninstall.sh

This script will:

• Stop and disable the scrolllock-monitor service.
• Remove the service file (/etc/systemd/system/scrolllock-monitor.service).
• Remove the script file (/usr/local/bin/scrolllock_monitor.sh).
  
  

Notes

• Adjusting the Script: The script monitors all /sys/class/leds/inputX::scrolllock/brightness files and sets them to 1 if they change to 0. Adjustments to monitoring frequency can be made by changing the sleep interval in the script.