ff844a2a81
We now warn on startup if screen locking isn't available, however for users who choose not to use GDM or logind, repeating the warning on each login is more annoying than helpful. Instead, limit the warning to the first login on which the screen lock became unavailable. That way the notification will still serve the intended purpose of informing the user, but without being perceived as nagging. https://gitlab.gnome.org/GNOME/gnome-shell/issues/2432