Comments on: How To Turn Off Your Monitor Via Command Line in Ubuntu https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/ Technology and System Administration Wed, 10 Aug 2011 12:37:00 +0000 hourly 1 https://wordpress.org/?v=6.3.1 By: Pk https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41882 Wed, 10 Aug 2011 12:37:00 +0000 http://systembash.com/?p=346#comment-41882 In reply to Shaded2.

i search the complete internet for an answer on this also, and finally found it.

To keep others from searching for this, cron needs the full path to vbetool
on ubuntu “/usr/sbin/vbetool dpms off” willl do the trick

]]> By: xset dpms force off https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41825 Wed, 30 Mar 2011 11:12:00 +0000 http://systembash.com/?p=346#comment-41825 Exactly what I needed. Keep it up!

]]> By: Shaded2 https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41821 Mon, 21 Mar 2011 17:00:00 +0000 http://systembash.com/?p=346#comment-41821 In reply to Dave Drager.

ok so it your script works for me when i use vbetool dpms off.

but why wont it work when i call it from a cron job?

]]> By: Shaded2 https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41820 Mon, 21 Mar 2011 15:44:00 +0000 http://systembash.com/?p=346#comment-41820 echo $DISPLAY shows :0.0

i also need to display to be off while the system is booting up and then turn on after boot is complete, is that possible?

]]> By: Dave Drager https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41819 Sat, 19 Mar 2011 03:32:00 +0000 http://systembash.com/?p=346#comment-41819 In reply to Shaded2.

Are you logged in on command line under the same user as the display? When you open a command prompt when logged in, what does “echo $DISPLAY” show?

]]> By: Shaded2 https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41818 Fri, 18 Mar 2011 20:41:00 +0000 http://systembash.com/?p=346#comment-41818 i get the following error when running the script

Turning monitor on…No protocol specified
xset: unable to open display “:0.0”
done.
Check:No protocol specified
xset: unable to open display “:0.0”

also i tried adding the command to a php script for use in a cron job. It work when i run manually, but the cron doesn’t seem to have any effect.

any ideas?

]]> By: Dave Drager https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41803 Thu, 03 Mar 2011 11:59:00 +0000 http://systembash.com/?p=346#comment-41803 In reply to Yktoo.

My guess would be that it is something to do with how the iMac determines when it should turn on the backlight. There is this script from 2005 (http://hintsforums.macworld.com/archive/index.php/t-42776.html) that seems to work to disable the backlight, you might want to check that out. Looks like its a hack but should work for you.

]]> By: Yktoo https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41802 Wed, 02 Mar 2011 22:13:00 +0000 http://systembash.com/?p=346#comment-41802 On an iMac (Ubuntu 10.10) work fine, the display goes off and so does the backlight, but backlight turns on back again in about 10 seconds (though the screen remains black). Is it a graphics card (ATI Mobility Radeon HD 4670) or an Xserver problem?

]]> By: Yebo29 https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41801 Tue, 01 Mar 2011 03:41:00 +0000 http://systembash.com/?p=346#comment-41801 sudo vbetool dpms off did the trick for me!

]]> By: Dave Drager https://systembash.com/how-to-turn-off-your-monitor-via-command-line-in-ubuntu/#comment-41765 Mon, 29 Nov 2010 17:07:00 +0000 http://systembash.com/?p=346#comment-41765 In reply to Jjmatt33.

Great – glad to help!

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