GNOME Bugzilla – Bug 705665
wrong key name in org.gnome.desktop.screensaver.gschema.xml.in.in
Last modified: 2013-08-08 14:15:01 UTC
In https://git.gnome.org/browse/gsettings-desktop-schemas/tree/schemas/org.gnome.desktop.screensaver.gschema.xml.in.in, there is a wrong key name: Set org.gnome.session.idle-delay to 0 if you do not want to activate the screensaver. The correct key should be org.gnome.DESKTOP.session.idle-delay.
Fixed in master, thanks!