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I am working on the raspberry pi3 wrote the following code under sudo nano ~/.config/lxsession/LXDE-pi/autostart 00 12 **** /usr/bin/vgencmd display_power 0 I know in terminal display_power 0 turns off the hdmi and the monitor then just needs to be turned off manually. Am I entering this code correctly so the display turns off at a certain time in this case it is set for noon. Any comments or suggestions is appreciated.

  • What are you asking? – User98764431 Oct 13 '17 at 17:40
  • What is the question, are you wanting to turn the HDMI off / on at certain times of the day? – Dr.Rabbit Oct 13 '17 at 20:04
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Turn on / off via Cronjob

If you want to turn the hdmi off and on at certain times you can do it via crontab.

crontab -e

add these two lines down the bottom

#on at 6am off at 6pm
0 6 * * * /usr/bin/python /home/pi/hdmi_on.sh
0 18 * * * /usr/bin/python /home/pi/hdmi_off.sh

create two files and remember to chmod +x both files

html_off.sh

#!/bin/bash

tvservice -o

html_on.sh

#!/bin/bash

sudo tvservice -p
sudo chvt 1
sudo chvt 7

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