fix multimonitor on plasma kde wayland sddm manjaro

fix.txt

These files are backups that go in ~/.config/
  eg:	/home/username/.config/

Fix or replace the files. Then log out session and log back in.

In plasmashell.rc: There should never be more than monitors than are physically connected in [ScreenConnectoers]
You can simply delete all entries and log out and log back in and plasmashell should remake the entries for you.
eg: I have 3 monitors:
  [ScreenConnectors]
	0=HDMI-A-1
	1=DVI-I-1
	2=DP-2
	
	
In plasma-org.kde.plasma.desktop-appletsrc: Ensure any lastScreen tags are not refereing to a monitor that does not exist
eg: lastScreen=3  <-broken becasue [ScreenConnectors] has only up to 2 in my case.

Thanks:
https://archived.forum.manjaro.org/t/plasmashell-multi-monitor-unwanted-screen-reorder-on-wake-displaced-panels/130677/4
also see:
https://github.com/shalva97/kde-configuration-files