[geolgau]

Wait a minute! I use KDE Plasma for at least 2 years constantly and it knows my monitors. I use one at work and one at home and when I plug them it automatically changes resolution and keeps the wallpaper I set for each. Also, got a lot of colleagues switch to Plasma from Gnome for exactly this reason!

[haspok]

Does it keep your windows in place? Resize/move them properly when you switch to a smaller resolution screen then resize/move them back again when you go back to UHD?

I found the situation is worse if I extend my monitor's screen onto the laptop, because when I unplug the monitor and plug it back again, all hell breaks loose.

(This with the latest KDE that Ubuntu 19.10 has)