Overlapping screens in Wayland

Sometime it is sometimes not to overlap two screens on top of each other.

Here it works

But just now on the same laptop I tried to overlap the laptop screen with our presenation screen and it would not let me.

What are the restrictions to overlap screens?

Operating System: Fedora Linux 44
KDE Plasma Version: 6.6.5
KDE Frameworks Version: 6.26.0
Qt Version: 6.11.1
Kernel Version: 7.0.10-200.fc44.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 64 GiB of RAM (62.3 GiB usable)
Graphics Processor 1: Mesa Intel® Arc
Graphics Processor 2: zink Vulkan 1.4
Manufacturer: LENOVO
Product Name: 21KS002EMZ
System Version: ThinkPad P16s Gen 3

There was a change in the UI to fix certain corner cases but which also removed this capability.

I used t o do this a lot as “partial cloning”, sharing only the top left portion of my laptop screen with the projector.

I’ve created a ticket to track this but I see it has been closed now.

We will need to create a new one for re-adding this feature but at least the old ticket contains some hints on how to work around this limitation for now.

This is mostly an intentional KDE Plasma Wayland limitation rather than a hardware issue. Older Plasma versions allowed overlapping displays more freely, but the behavior was restricted because it caused various compositor and window-management edge cases under Wayland.

Your setup likely worked before because Plasma previously tolerated these “partial overlap” layouts, especially for projector-style workflows. Later KWin/KScreen changes tightened those rules to avoid rendering, scaling, and fullscreen inconsistencies.

So this is most likely coming from Plasma Wayland’s current display-management behavior, not from your Intel Arc GPU, Lenovo hardware, or Fedora itself.