Convert daemon to a system-wide systemd service

README.md

@@ -11,7 +11,7 @@ Designed for a server kept behind glass, but works for any use where you want sy
 | `asrock_hid.py` | Low level HID driver for the Polychrome controller |
 | `asrock-led.py` | Manual CLI for raw read/write/commit against the device |
 | `asrock-indicator.py` | Daemon with socket API plus the `ctl` client |
-| `asrock-led.service` | systemd user unit for the daemon |
+| `asrock-led.service` | systemd unit for the daemon (system-wide, installed to `/etc/systemd/system`) |
 | `99-asrock-led.rules` | udev rule giving the `plugdev` group access to the hidraw node |
 
 ## Requirements
@@ -33,20 +33,15 @@ sudo udevadm trigger
 
 Your user must be a member of the `plugdev` group.
 
-2. Copy the service unit and start it:
+2. Install the systemd unit and start it:
 
 ```
-mkdir -p ~/.config/systemd/user
-cp asrock-led.service ~/.config/systemd/user/
-systemctl --user daemon-reload
-systemctl --user enable --now asrock-led.service
+sudo cp asrock-led.service /etc/systemd/system/asrock-led.service
+sudo systemctl daemon-reload
+sudo systemctl enable --now asrock-led.service
 ```
 
-Optionally enable linger so the daemon starts at boot even before login:
-
-```
-sudo loginctl enable-linger $USER
-```
+The daemon runs as root. If you prefer it to run unprivileged, add `User=` and `Group=` under the `[Service]` section (your user must then be in the `plugdev` group for the udev rule above to apply).
 
 3. Put `asrock-indicator` (client shim) somewhere on your PATH, pointing at the daemon: