= monitor-monitor

This program monitors my monitors (plugged/unplugged) and applies the desired configuration.

== Install

[source, bash]

npm install -g monitor-monitor

== Usage

Use it like this:

[source, bash]

monitor-monitor monitor-setups.json

monitor-setups.json is a JSON file containing something like this:

[source, json]

{ "LG/1178/unknown": { "name": "laptop-only", "xrandrCommand": "xrandr --output eDP1 --primary --mode 2560x1440 --pos 0x0 --rotate normal" }, "LG/1178/unknown,Iiyama/26140/PLX2783H-DP": { "name": "home", "xrandrCommand": "xrandr --output eDP1 --primary --mode 2560x1440 --pos 0x1512 --rotate normal --output HDMI2 --mode 1920x1080 --scale 1.4x1.4 --panning 2688x1512" } }

The keys are combinations of screens identifiers (vendor, productCode & modelName from EDID) separated by comas. For each monitor setup, you need to specify a name and a command to execute (an xrandr command preferably).

== Set up systemd service

If you want this to run in the background, you could set up a user systemd service. Write this in /etc/systemd/system/monitor-monitor.service:

[source, config]

[Unit] Description=Monitor monitor Wants=dbus.service After=dbus.service

[Service] ExecStart=/path/to/node /path/to/monitor-monitor /path/to/monitor-setups.json Restart=always RestartSec=10 StandardOutput=syslog StandardError=syslog SyslogIdentifier=monitor-monitor Environment=DISPLAY=:0.0 WorkingDirectory=/path/to/home

[Install] WantedBy=default.target

And the run the following commands:

[source, base]

systemctl --user enable monitor-monitor.service sudo systemctl daemon-reload systemctl --user start monitor-monitor

Sources:

• https://www.axllent.org/docs/view/nodejs-service-with-systemd/
• https://wiki.archlinux.org/index.php/Systemd/User
• https://immae.eu/blog/2014/05/10/gerer-sa-session-avec-systemd/