Raspberry Pi 4 - Kodi - Clone Displays

    I have a Raspberry Pi 4 connected to two identical displays, one on each of the HDMI out ports.

    I am running LibreElec 9.2.8.

    When I boot the system, I see the splash screen on both screens. As soon as the Kodi app launches full screen, its only one one screen, and the 2nd is black.

    I've seen a lot of references to "Kodi only support clone mode" and not extended displays. However, the Kodi forum has been taken offline so a lot of the content out there just links to dead links.

    I've tried the following settings in /flash/config.txt

    hdmi_safe=1
    max_framebuffers=2

    hdmi_force_cec_address:0=65535

    hdmi_force_cec_address:1=65535

    hdmi_force_hotplug:0=1

    hdmi_force_hotplug:1=1

    hdmi_group:0=2

    hdmi_group:1=2

    hdmi_mode:0=4

    hdmi_mode:1=4

    hdmi_pixel_freq_limit:0=0x11e1a300

    hdmi_pixel_freq_limit:1=0x11e1a300

    Does anyone know how to get 2 identical displays?