Screen watcher for Linux Mint Immersed (dis)connect.

screen-monitor.service

[Unit]
Description=Brings up Virtual monitors when Immersed (dis)connects

[Service]
Type=simple
Restart=on-failure
ExecStart=~/Scripts/ScreenMonitor.sh

[Install]
WantedBy=default.target

ScreenMonitor.sh

#! /bin/bash

OUTPUT_NAME="DVI-I-2-2"
OUTPUT_MODE="1920x1080"
OUTPUT_LOCATION="--right-of DP-1-3"
LOG_DIR="~/.Immersed/Logs"

agent_started() {
  pgrep Immersed &> /dev/null 2>&1
  return $?
}

most_recent_log() {
  ls -t1 $LOG_DIR | head -n 1
}

is_most_recent_log() {
  if [[ $LOG_FILE == $(most_recent_log) ]] ; then
    return 0
  fi
  return 1
}

session_has_started() {
  grep -Fq "will init display" "$LOG_DIR/$LOG_FILE"
  return $?
}

create_screen() {
  xrandr --addmode $OUTPUT_NAME $OUTPUT_MODE
  xrandr --output $OUTPUT_NAME --mode $OUTPUT_MODE $OUTPUT_LOCATION
}

remove_screen() {
  xrandr --output $OUTPUT_NAME --off
}

watch_for_connect() {
  while ! session_has_started ; do
    sleep 1
    if ! is_most_recent_log ; then
      return
    fi
  done
}


watch_for_disconnect() {
  while is_most_recent_log ; do
    sleep 1;
  done
}

while true; do
  while ! agent_started ; do sleep 1 ; done
  LOG_FILE=$(most_recent_log)
  if session_has_started
  then
    create_screen
    watch_for_disconnect
  else
    remove_screen
    watch_for_connect
  fi
done