I'm using Fedora 25 and my screen always blanks after 10 minutes of inactivity. I tried disabling it since it's very annoying when watching videos, but I didn't have any luck so far. These are the steps i tried, but none of them worked:

  • Disabled screen blanking in Settings->Power
  • Disabled X screen blanking with

    xset -dpms
    xset s off
    xset dpms 0 0 0 && xset s noblank && xset s off
  • Tried running GNOME under Wayland
  • Tried setting the following gsettings
    • org.gnome.desktop.screensaver.idle-activation-enabled to false
    • org.gnome.desktop.screensaver.lock-delay to 0
    • org.gnome.desktop.session.idle-delay to 0 and 10800
    • org.gnome.settings-daemon.plugins.power.sleep-display-ac to 0
    • org.gnome.settings-daemon.plugins.power.sleep-display-battery to 0
    • org.gnome.settings-daemon.plugins.power.idle-dim to false

Nothing worked, my screen still goes blank after 10 minutes. Any settings I could have overlooked?

  • Did you turn screen lock off in privacy settings? It might be interfering. Else you could get the caffeine extension and use that.
    – Mio Rin
    May 23 '17 at 18:18
  • Sounds almost like a visual bell, is it possible to have that in a graphical environment?
    – ProdIssue
    May 23 '17 at 18:24
  • Neither turning off screen lock nor caffeine made any difference :/
    – Metalfreak
    May 23 '17 at 20:00

I found the problem, XFCE installed xscreensaver as a dependency and it was automatically started alongside GNOME for some reason

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