[Unit] Description=Mirror internal panel brightness to external HG342PCB PartOf=graphical-session.target After=graphical-session.target wluma.service [Service] EnvironmentFile=-%h/.config/brightness-automation/env ExecStart=%h/.local/bin/brightness-sync-hg342pcb Restart=always RestartSec=2 [Install] WantedBy=graphical-session.target