Ubuntu – How to permanently disable monitor power saver using the command line

11.04command linepower-managementxorg

I have tried as following:

1. Turn off: export DISPLAY=:0.0 && xset dpms force off 
2. Turn on: export DISPLAY=:0.0 && xset -dpms

Which works but that is a temporary solution, which does not fix my problem yet. When i reboot system it start again and again the same auto turn off mode.

How can i now remotely using SSH turn it off forever?

IMPORTANT:

- KIOSK (ATM machine will use this option)
- 24/7 advertising display/slides will use this

Optional Note: this guide i followed http://v2kblog.blogspot.com/2008/08/disabling-monitor-power-saver.html , but permanent solution did not worked.

Best Answer

#!/bin/bash
export DISPLAY=:0.0

if [ $# -eq 0 ]; then
  echo usage: $(basename $0) "on|off|status"
  exit 1
fi

if [ $1 = "off" ]; then
  echo -en "Turning monitor off..."
  xset dpms force off
  echo -en "done.\nCheck:"
  xset -q|grep "Monitor is"
elif [ $1 = "on" ]; then
  echo -en "Turning monitor on..."
  xset dpms force on
  echo -en "done.\nCheck:"
  xset -q|grep "Monitor is"
elif [ $1 = "status" ]; then
  xset -q|sed -ne 's/^[ ]*Monitor is //p'
else
  echo usage: $(basename $0) "on|off|status"
fi

Save this script in something like /usr/bin, give it a name (like switch_dpms) and make it executable with chmod 664 /usr/bin/switch_dpm.

Now all you need to do is add it to a cron job. So open your crontab file with:

crontab -e

and add this at the bottom:

@reboot /usr/bin/switch_dpms off

Every reboot it will turn dpms to off and you can also turn it on from commandline by doing /usr/bin/switch_dpms on or check its status with /usr/bin/switch_dpms status.

Source for the script