Bug 460030

Summary:	[Wayland] When using a wacom tablet with multiple displays you can get two (or possibly more) cursors.
Product:	[Plasma] kwin	Reporter:	John Iliopoulos <jxftw2424>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	aleixpol, dmatteo002, nate
Priority:	NOR
Version First Reported In:	5.25.90
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description John Iliopoulos 2022-10-06 05:30:37 UTC

SUMMARY
So far i have only observed this in wayland.
I have a system with two displays, and two inputs a wacom tablet and a mouse. The wacom is specifically told to use the first display via the "drawing tablet" menu in the settings.

STEPS TO REPRODUCE
Not exactly sure how reproduce. 
I personally use the drawing tablet on one display but it may also happen with other settings.

OBSERVED RESULT
you might get unclickable windows like me where it doesn't matter what input device you use, you wont be able to click on any other elements and may need to reboot.
You also get two cursors one for each display. should note that when moving both input devices its almost like they are fighting for dominance(both cursors flicker one at a time)

EXPECTED RESULT
there should only be one cursor and you should be able to click and interact with other windows

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: ArchLinux/5.25.90
(available in About System)
KDE Plasma Version: 5.25.90
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6

ADDITIONAL INFORMATION
I initially observed this on plasma 5.25 but i am using the unstable releases now in hopes that i get a possible patch earlier

Comment 1 dmatteo002 2022-12-04 20:08:53 UTC

I have the same problem (duplication of cursor and flickering) even using only one screen so I don't it matter the number of screen, instead i think is a general problem with wayland and drawing tablets.