|# Enable and disable HDMI output on the Raspberry Pi|
|tvservice -s | grep "TV is off" >/dev/null|
|case $1 in|
|if [ "$curr_vt" = "1" ]|
|echo "Usage: $0 on|off|status" >&2|
Feb 24, 2017
Just a note to other users, the fgconsole command must be called with sudo privileges or you will get an error:
Couldn't get a file descriptor referring to the console
Mar 30, 2017
@Chalta - are you saying you modified the line from:
Apr 5, 2017
Is there a way to switch between hdmi and composite video without rebooting?
Apr 6, 2017
@IBKDan I found some comments suggesting vcgencmd instead of tvservice (info here). I forked this and used vcgencmd instead. So far no issues, and no need for sudo.
Jul 16, 2017
Hi all. I am trying to use this script to turn my raspberry pi on/off at different times depending if its a work day or a weekend.
I know how to setup the weekday AND weekend requests separate from one another.
M-F: (turn it off all day, only back on when we get home after work)
Every day during the week I want the HDMI port on at 7AM, and off at 9AM. I want it back on when we get home at work from 5:00 PM and to turn off for the day at 11PM.
Sat-Sun: (leave it on all day)
On at 7AM, Off at 11PM.
So since I have a global on and off time of 7AM and 11PM every day we could say:
00 7 * * * * /home/pi/rpi-hdmi.sh on
00 23 * * * * /home/pi/rpi-hdmi.sh off
Then for the weekdays:
00 9 * * 1–5 /home/pi/rpi-hdmi.sh off (off at 9AM)
00 17 * * 1–5 /home/pi/rpi-hdmi.sh on (on at 5PM)
My question to you is one of order — how do I know if these will be executed in this order? Is there a better way to write this?
Nov 30, 2017
@leemcarthur: Did you ever figure out a solution to that?
Feb 16, 2018
@leemcarthur: Did you ever figure out a solution?
Here's the solution. I think you will have problem each on/off for each day. See http://ediy.com.my/index.php/tutorials/item/106-raspberry-pi-schedule-turn-off-on-display
Feb 22, 2018
@Chalta if you add sudo to all of the commands, that should fix teh Couldn't get a file descriptor referring to the console error,
Enable and disable HDMI output on the Raspberry Pi
sudo tvservice -s | grep "TV is off" >/dev/null
case $1 in
sudo tvservice -o
sudo tvservice -p
if [ "$curr_vt" = "1" ]
sudo chvt 2
sudo chvt 1
sudo chvt 1
sudo chvt "$curr_vt"
echo "Usage: $0 on|off|status" >&2
May 27, 2018
Hi, never done any coding whatsoever before, but thought I’d try my hand with dakboard. I’ve loaded it up and working on my monitor through raspberry pi, and followed the script above but I’m getting lost with how to complete the rest of it. Is there an idiots guide to getting this to work?
Thanks in advance
Jun 8, 2018
@usafle & @wmcollins - yes I did figure it out. I wrote out the syntax here after much trial and error:
I have a whole other issue with crontab not running at all, or rather, running two processes right now:
ps -eaf | grep cron
root 360 1 0 20:58 ? 00:00:00 /usr/sbin/cron -f
pi 1303 1294 0 20:59 pts/0 00:00:00 grep --color=auto cron
So its running as the pi user as well as root? Could this be the issue why my rpi-hdmi.sh script isn't running?
Dec 10, 2018
@leemcarthur - not sure if you got your answer, but the second cron you see is actually capturing that the second part of your command (grep cron) is running.
Jan 26, 2019
Couldn't make this script work right on Pi3's.. screen would go off, then never go back on, error message was "failed to set"
Searched and found:
tvservice is not the best to turn off and on the screen. Much better way to do this (found after a day of searching) is using vcgencmd command (more on this here).
vcgencmd display_power 0 turns off the screen
vcgencmd display_power 1 turns on the screen
(From Here : https://raspberrypi.stackexchange.com/questions/52042/turning-tvservice-on-and-off-leaves-screen-blank )
Feb 22, 2019
I am a senior citizen, with the ambition to use DAKboard to coordinate daily activities between myself and my wife. We have entered the stage in life were we often forget what we are told by the other. DAKboard is perfect for the purpose to keep each other updated on what is coming up the next days. I am not at all familiar with coding, but my experience is good with cut and paste. So DIASHER (my screen also does not come back on in he morning), what would the totalt script look like? Are you able to give me a hand?
Mar 8, 2019
Hi @DonSpain, in case you haven't found an answer yet I made a small script that uses vcgencmd and works with DAKboard.
(Link to it: https://gist.github.com/SirCrocker/937d06f8f2c1227a83802b9b77f60ba0)
Apr 4, 2019
@SirCrocker can you copy and paste this INSTEAD of the TV Service one or do you have to do other stuff in crontab to accommodate?
Sep 2, 2019
It works on Raspberry Pi 4, but is necessary run it twice for HDMI poweroff.
Jan 29, 2020
@quelleck, your fork worked perfectly on my Raspberry PI with the latest version of Rasbian as of Jan 2020. Thank you!
May 3, 2020
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?
Jul 29, 2021
I couldn't get it to work so I rewrote it to use cec-hdmi instead.
I have it working on a Raspberry Pi 4. But only in HDMI port 2.
I have a standard console on VT1 and X11 on VT2. When I ran your script initially, it wasn't working. I poked around a bit and it seems that the VT numbers were getting mixed up for some reason. I added some sleeps in between the
chvtcommands and that seems to have fixed things. I let it burn in for a few hours running:
while true; do sudo ./rpi-hdmi off; sleep 10; sudo ./rpi-hdmi on; sleep 60; done
...and it seems to be working consistently now. Thanks for your help with this solution!