LXQt-scripts

kbd_backlight

A small script to get or set the keyboard backlight via UPower (for LXQt on X11).

Installation

• Copy the script to ~/.local/bin
• Ensure ~/.local/bin is in your PATH (add to ~/.profile or ~/.bashrc if needed).

Usage

• Increase keyboard backlight by 15: kbd_backlight +15
• Decrease keyboard backlight by 15: kbd_backlight -15
• Set an absolute keyboard backlight value (integer): kbd_backlight 150

Integration with LXQt

• Open LXQt Global Actions (lxqt-config-globalkeyshortcuts).
• Create a keyboard shortcut to increase backlight, command: kbd_backlight +15
• Create a keyboard shortcut to decrease backlight, command: kbd_backlight -15

Notes

• The script requires gdbus and access to the system D-Bus org.freedesktop.UPower KbdBacklight object.
• Argument must be an integer, optionally prefixed with + or - for relative changes.
• The value will be clamped to the device-supported range.