How to reproduce this issue: * Install Debian 13 minimal on physical hardware (e.g. a notebook), and run `apt install lomiri` afterwards. Reboot. * After reboot, Lomiri Greeter should appear on screen. Attach a second / external display to the test machine now. What you will observe: - The external display show Lomiri shell, but without the configured background image like on the primary screen. - The mouse pointer will be trapped on the external display - The mouse pointer will not transfer the login prompt to the external display What should happen: - Mouse pointer should be movable between displays - Background image should show up on all screens / displays - Ideally / optionally: the login prompt follows the mouse pointer (we assume that this code exists in Lomiri Greeter, as the UX design of Unity Greeter 7 was the same, if the code does not exist, skip this item).