Monitor switching script for Optimus (Intel + Nvidia) equiped computers

monitor-plug.sh

#!/bin/bash

export DISPLAY=:0.0
export XAUTHORITY=/home/nikku/.Xauthority

INTERN="LVDS1"
EXTERN="VIRTUAL3"
DOCK1="VIRTUAL4"
DOCK2="VIRTUAL5"
PROJECTOR="VGA1"


function p {
  echo -e "\e[0;33m$1\e[m"
}

function g {
  echo -e "\e[0;36m$1\e[m"
}

function echo_done {
  echo -e " \e[0;32m[done]\e[m"
}

function update_displays {

  local mode=${1-auto}

  local XRANDR=`xrandr -q`

  local VGA_MODE=${2-1024x768}

  local DOCK_MODE=`xrandr -q | grep "1920x1080  60.00" | head -n 1 | cut -d" " -f4`
  local DOCK_MODE="${2-$DOCK_MODE}"

  case $mode in
    intern)
      echo "$(g [xrandr]) using $(p INTERN)"
      xrandr --output $INTERN --auto --output $DOCK1 --off --output $DOCK2 --off --output $EXTERN --off --output $PROJECTOR --off
      ;;
    auto)
      if [[ $XRANDR =~ "$EXTERN connected" ]]; then
        echo "$(g [xrandr]) using $(p EXTERN)"
        xrandr --output $INTERN --auto --output $EXTERN --left-of $INTERN --mode $DOCK_MODE
      elif [[ $XRANDR =~ "$DOCK1 connected" ]] && [[ $XRANDR =~ "$DOCK2 connected" ]]; then
        echo "$(g [xrandr]) using $(p DOCKING) with mode $DOCK_MODE"
        xrandr --output $INTERN --auto --output $DOCK1 --mode $DOCK_MODE --right-of $INTERN --output $DOCK2 --mode $DOCK_MODE --right-of $DOCK1
      elif [[ $XRANDR =~ "$PROJECTOR connected" ]]; then
        echo "$(g [xrandr]) using $(p PROJECTOR) with mode $VGA_MODE"
        xrandr --output $INTERN --auto --output $PROJECTOR --mode $VGA_MODE >> /tmp/hotplug.txt 2>&1
      else
        update_displays intern $2
      fi
      ;;
    *)
      echo "Unknown mode: $mode" >&2
      exit 1
      ;;
  esac

  sleep 2
}

# update monitors according to $output $mode args
function monitors_plug {

  local output=$1

  if [ "$output" = "optimus" ]; then

    if [ "$(pgrep intel)" = "" ]; then
      echo -n "$(g [optimus]) starting"
      intel-virtual-output
      echo_done

      echo -n "$(g [optimus]) refreshing displays"
      sleep 5
      echo_done
    fi
  else
    if [ "$(pgrep intel)" != "" ]; then
      update_displays intern

      echo -n "$(g [optimus]) stopping"
      pkill intel

      until [ "$(pgrep intel)" = "" ]; do
        sleep 1
        echo -n " ."
      done
      echo_done

      echo -n "$(g [optimus]) refreshing displays"
      sleep 4

      echo_done
      exit 0
    fi
  fi

  update_displays $2 $3
}


# parse options helper
function parse_opts {

  local output=optimus
  local resolution
  local mode=auto

  while getopts ":m:o:" opt $@; do
    case $opt in
      m)
        mode=$OPTARG
        ;;
      r)
        resolution=$OPTARG
        ;;
      o)
        if [ "$OPTARG" = "optimus" ] || [ "$OPTARG" = "intel" ]; then
          output=$OPTARG
         else
           echo "Invalid option -b $OPTARG; use -b (optimus|intel)" >&2
           exit 1
         fi
         ;;
      \?)
        echo "Invalid option: -$OPTARG" >&2
        exit 1
        ;;
      :)
        echo "Option -$OPTARG requires an argument." >&2
        exit 1
        ;;
    esac
  done

  monitors_plug $output $mode $resolution
}

# parse options and go
parse_opts $@