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Since installing caffeine my screen is no longer turning off. I installed a screen saver, and that isn't working either. Caffeine wasn't running. I unistalled caffeine, but still no luck. Any suggestions as to how making my screen turn off again? It's set at 3 minutes. I disabled lock. Thank you!

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    Did you just remove it or purge it?
    – Ceda EI
    Nov 14, 2016 at 13:43
  • I uninstalled it from the software manager
    – Johan
    Nov 14, 2016 at 16:44
  • Try purging it using apt
    – Ceda EI
    Nov 14, 2016 at 17:11
  • appaently it was purged, because apt didn't find it.
    – Johan
    Nov 14, 2016 at 19:34

1 Answer 1

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Maybe it deleted necessary package:

sudo apt-get install gnome-screensaver 

Should enable the screensaver:

gsettings set org.gnome.desktop.screensaver idle-activation-enabled true

Time in Second before the display darkens.

gsettings set org.gnome.desktop.session idle-delay "time/s"

Maybe the dim option is disbled:

gsettings set org.gnome.settings-daemon.plugins.power idle-dim true

If you do not have display power management installed, then X-Server takes over this task.

xset +dpms && xset s on         -> Enabel DPMS and Screensaver
xset +dpms dpms 600 1200 1800   -> Standby, Suspend and Off set in seconds
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  • gsettings set org.gnome.desktop.screensaver idle-activation-enabled true didn't work, neither did this: gsettings set org.gnome.settings-daemon.plugins.power idle-dim true but this works: gsettings set org.gnome.desktop.session idle-delay "time/s" Any idea what the problem might be?
    – Johan
    Nov 14, 2016 at 16:53
  • must be caffeine, when I reinstalled it I had the same problem. Is there an alternative to caffeine? I want the screen to stay on when watching a movie.
    – Johan
    Nov 14, 2016 at 17:45
  • The screensaver I had installed was mate, not gnome. Gnome screensaver isn't in the ubuntu software. Anyway, I removed it, since it isn't working anyway.
    – Johan
    Nov 14, 2016 at 18:15
  • Thanks, but that's above my head. I don't know if I have power management installed, if it doesn't come by default I guess not. I don't know what x-server does, but I only want suspend when I close the lid (i made that change in power settings). I'll just forget about the screensaver, and will set the screen of time to never whenever I watch a movie. This was a lot easier in windows :-) Bit strange that ubuntu doesn't notice when watching movie in full screen.
    – Johan
    Nov 14, 2016 at 18:53

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