Thinkpad udev xrandr dock event

81-thinkpad-dock.rules

KERNEL=="dock.0", ACTION=="change", RUN+="/usr/sbin/thinkpad-dock"

thinkpad-dock

#!/bin/sh

# wait for the dock state to change
set -x
sleep 1
DOCKED=$(cat /sys/devices/platform/dock.0/docked)
case "$DOCKED" in
	"0")
		#undocked event - lets remove all connected outputs apart from LVDS
		for output in $(/usr/bin/xrandr -d :0.0 | grep " connected" | grep -v LVDS | awk '{print $1}')
		do
			/usr/bin/xrandr -d :0.0 --output $output --off
		done
		/usr/bin/xrandr -d :0.0 --output LVDS --auto
		;;
	"1")
		#docked event - disable Laptop and setup dual monitor
		/usr/bin/xrandr -d :0.0 --output LVDS --off
		/usr/bin/xrandr -d :0.0 --output DVI-0 --auto --output VGA-0 --right-of DVI-0 --auto
		;;
esac
exit 0