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.
Turn on / off via Cronjob
If you want to turn the hdmi off and on at certain times you can do it via crontab.
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
#!/bin/bash tvservice -o
#!/bin/bash sudo tvservice -p sudo chvt 1 sudo chvt 7