LE 9.80 nightly and secondary display on RPi 4B ?

I know this question repeats now and then and looks even Kodi 19 BETA1 still does not support more than 1 display on this platform.

But I wonder if any developer could share some information what's the current status regarding this matter please? What is possible and what is not possible and why? Whay does and what does not make sense to try?

The goal for me in future is to use HDMI0 for LE / Kodi and HDMI1 to display IP camera(s) stream(s). Currently I am trying to get Kodi working on preferred HDMI port when there are 2 displays connected.

I have discovered that Kodi in LE 9.80 succesfully switch to HDMI port where the display is connected at boot if there's just 1 display connected. So HDMI1 can be used this way. But if both HDMI ports are occupied, always HDMI0 is used.

Is there any other way to force Kodi to use HDMI1 port instead default HDMI0 without cable detaching? The Monitor option is missing on Kodi Settings / System / Display page, playing with guisettings.xml did not help so far to overcome the default output to HDMI0.

On LE 9.2.6 using tvservice app (not useable anymore on LE 9.80) I was somehow able to get video displayed on HDMI1 even after boot when HDMI0 was active but there's no way to do the same on LE 9.80.

Struggling with config.txt in accordance with post Rpi4 - switching between different resolution HDMI outputs with one click also did not help.

xrandr does not work on LE 9.80 (yet?).

Could somebody informed give a comment please?

Thanks for the reply. Yeah but even the display clone I can't achieve on LE 9.80 - the display content is cloned when LE starts (the LibreELEC logo displayed on both ) until Kodi is initialitzed - then the secondary display is blanked out (regardless the Blank other displays settings) until Kodi is stopped - then the LE logo is again visible on both displays.

FYI this is info from Raspberry OS on the same HW:

export DISPLAY=:0.0

xrandr

xrandr

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 7680 x 7680

HDMI-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 160mm x 90mm

1920x1080 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98

1920x1080i 60.00 50.00 59.94

1600x1200 60.00

1680x1050 59.88

1280x1024 75.02 60.02

1440x900 74.98 59.90

1280x960 60.00

1280x800 59.91

1152x864 75.00

1280x720 60.00 50.00 59.94

1024x768 75.03 70.07 60.00

832x624 74.55

800x600 72.19 75.00 60.32 56.25

720x576 50.00

720x480 60.00 59.94

640x480 75.00 72.81 66.67 60.00 59.94

720x400 70.08

HDMI-2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 1150mm x 650mm

1920x1080 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98

1920x1080i 60.00 50.00 59.94

1280x1024 60.02

1360x768 60.02

1280x720 60.96 60.00 50.00 59.94

1024x768 60.00

800x600 60.32

720x576 50.00

720x576i 50.00

720x480 60.00 59.94

640x480 60.00 59.94

720x400 70.08