This Settings → Power → Screen Blank parameter is also one of the parameters set by my app “prepuse” (see https://forums.puri.sm/t/new-debian-package-prepuse). It is configured in the blank screen preparation file “blank-screen.prep” to run “gsettings org.gnome.desktop.session idle-delay …”. This preparation is used in the use-case files “pure-maps.use” (where it is set to never) and in the use-case “no-gps.use”, where it is set to the previous value again.
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