Bug 489540

Summary:	Doubled cursors in QEMU spice
Product:	[Plasma] kwin	Reporter:	Fxzx Zyra <zr+2ce7rmqg>
Component:	platform-drm	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	nate, vlad.zahorodnii, xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.1
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	SDDM login interface Desktop two cursors Required information

Description Fxzx Zyra 2024-07-01 10:37:15 UTC

SUMMARY
Two mouse cursors are displayed inside the VM and not very synchronized. 

STEPS TO REPRODUCE
1. Install openSUSE Tumbleweed in QEMU.
2. Enter desktop.

OBSERVED RESULT
Doubled cursors

EXPECTED RESULT
Only one cursor

SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
It only appears after entering the desktop and is normal on the SDDM login interface. So it should be a Wayland related issue.
https://gitlab.freedesktop.org/spice/spice-gtk/-/issues/101#note_1039554

Comment 1 Fxzx Zyra 2024-07-01 11:05:16 UTC

Created attachment 171234 [details]
SDDM login interface

Comment 2 Fxzx Zyra 2024-07-01 11:06:36 UTC

Created attachment 171235 [details]
Desktop two cursors

Comment 3 Zamundaaa 2024-07-22 20:29:22 UTC

Please attach the output of drm_info and
> journalctl --user-unit plasma-kwin_wayland --boot 0
(from in the VM)

Comment 4 Fxzx Zyra 2024-07-25 10:46:26 UTC

Created attachment 171976 [details]
Required information

Comment 5 Zamundaaa 2025-03-11 18:46:22 UTC

Sorry, this got lost in my mails. The driver doesn't expose a hardware cursor, so KWin paints a software cursor... That the VM is in addition painting another cursor is a bug in the VM (kernel driver, or the GUI for the VM, not sure), not something we can fix.