Enable and disable the HDMI port on the Raspberry Pi: `rpi-hdmi on` to turn on, `rpi-hdmi off` to turn off. X is properly reinitialized when re-enabling.

rpi-hdmi.sh

#!/bin/sh

# Enable and disable HDMI output on the Raspberry Pi

is_off ()
{
	tvservice -s | grep "TV is off" >/dev/null
}

case $1 in
	off)
		tvservice -o
	;;
	on)
		if is_off
		then
			tvservice -p
			curr_vt=`fgconsole`
			if [ "$curr_vt" = "1" ]
			then
				chvt 2
				chvt 1
			else
				chvt 1
				chvt "$curr_vt"
			fi
		fi
	;;
	status)
		if is_off
		then
			echo off
		else
			echo on
		fi
	;;
	*)
		echo "Usage: $0 on|off|status" >&2
		exit 2
	;;
esac

exit 0

Good script. Is there a similar script to disable the SPI port at night time? I have a youtube subscribers LCD running along with the Dakboard setup and I want them both to turn off at the same time. Will the same code above also work for the SPI port? Thanks in advance.

hello, my raspberry Pi3B + Recalbox activates my automatic HDMI switch even when the Pi has no power. So this script allows you to completely disable the HDMI port when the Pi is turned off?

sudo vcgencmd display_power 0

Turns off video output.

sudo vcgencmd display_power 1

Turns on video output.

More easy no?

don't work...

I couldn't get it to work so I rewrote it to use cec-hdmi instead.

https://gist.github.com/macninja/6c13596f06206eec162f9dce1fc4313b

I have it working on a Raspberry Pi 4. But only in HDMI port 2.