Plasma bug with multiple xscreens in >=5.24

[allistarM]

Hi all,
I run a system with 2 Nvidia GPUs and 2 xscreens. xcreen0 has 4 monitors and xscreen1 has 2 monitors. On plasma version 5.23 and earlier this works well as plasma ignores xscreen1. It correctly runs one plasma shell on each of the 4 monitors on xscreen0. Version 5.24 of plasma-workspace (or related packages) has introduced a bug where plasma now creates 4 shells, but two of them are on xscreen0 and 2 are on xscreen1. I want plasma to leave xscreen1 alone. I think this is related to how plasma identifies the outputs by the xrandr name. I think it assumes these names are unique, but in a multiple GPU system they aren't.

On xscreen0 the command:
xrandr --listmonitors
Returns:
0: +*DVI-I-1 1920/598x1080/336+1920+1080 DVI-I-1
1: +HDMI-0 1680/473x1050/296+240+30 HDMI-0
2: +DVI-D-0 1920/521x1080/293+1920+0 DVI-D-0
3: +HDMI-1 1920/480x1080/270+0+1080 HDMI-1

And on xscreen1 this is:
0: +DVI-I-1 1680/433x1050/271+0+0 DVI-I-1
1: +DVI-D-0 1920/509x1080/286+0+1050 DVI-D-0

It looks like plasma is trying to start up a shell for the 4 monitors on screen0 but because two of them have the same name as outputs on xscreen1 plasma is getting confused and starting them on there instead.

Is anyone aware of a way to tell plasma version 5.24 and newer to stick to one xscreen and ignore another?
Thanks,
Allistar.

[allistarM]

I have fixed this issue by patching the plasma-workspace ebuild. I've added the ability to black-list monitors by their serial number. These monitors won't be added up by Plasma.