Does the Librem 15 (or the 13, for that matter) have a light sensor to automatically adjust screen brightness? I know that GNOME supports it, but I don’t see the option in Settings.
I have the same question about my Librem13v3. I tried moving the camera switch to On, assuming the auto brightness feature would use it, and rebooting, but it still doesn’t show up in the gnome settings: https://help.gnome.org/users/gnome-help/stable/power-autobrightness.html.en