From 788b8c8ed4fb21a69abfc8333bf42d2844a94c94 Mon Sep 17 00:00:00 2001
From: eleksir <eleksir@exs-elm.ru>
Date: Fri, 14 Sep 2018 17:45:05 +0300
Subject: [PATCH] add hdmi_toggle.sh - simple udev hook to configure hdmi
 display

---
 hdmi_toggle.sh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 hdmi_toggle.sh

diff --git a/hdmi_toggle.sh b/hdmi_toggle.sh
new file mode 100644
index 0000000..d8cfd53
--- /dev/null
+++ b/hdmi_toggle.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# grab the display and xauthority cookie
+export DISPLAY=$(w -h -s | grep ":[0-9]\W" | head -1 | awk '{print $2}')
+X_USER=$(w -h -s | grep ":[0-9]\W" | head -1 | awk '{print $1}')
+export XAUTHORITY=/home/$X_USER/.Xauthority
+
+# get the status of the external display
+status=$(< /sys/class/drm/card0-HDMI-A-1/status)
+case $status in
+	disconnected)
+		su $X_USER -c 'xrandr --output HDMI-1 --off'
+		logger "disabled hdmi output for $X_USER"
+		;;
+	connected)
+		while [[ $(< /sys/class/drm/card0-HDMI-A-1/enbled) ne 'enabled' ]]; do
+			su $X_USER -c 'xrandr --output HDMI-1 --auto'
+			sleep 1;
+		done
+		su $X_USER -c 'xrandr --output HDMI-1 --auto --right-of eDP-1'
+		logger "enabled hdmi output for $X_USER"
+		;;
+esac