How to make Kiosk session's screen go blank?

Hi,

I’ve been trying to get the kiosk session to respect “org.gnome.desktop.session idle-delay” but to no avail. I’ve set it to 60 seconds but it doesn’t work, the screen is always on.

Through my research, I’ve tried running gsd-power as a systemd unit and also included “org.gnome.SettingsDaemon.Power” as a required component over at “/usr/share/gnome-session/sessions/gnome-kiosk-script.session” but still nothing.

I’m setting up an embedded device, backed by a battery, and having the screen go blank would help a lot.

Thanks.