Bug 436771

Summary:	Mouse pointer not visible when screen-sharing under wayland
Product:	[Plasma] kwin	Reporter:	physkets <physkets>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.21.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description physkets 2021-05-08 13:16:51 UTC

SUMMARY

The mouse's pointer isn't visible when one shares screen on wayland. This is useful when presenting, because being able to point at things you're talking about makes it easier.

This happens when sharing either specific windows or the full screen, using the Firefox screen-sharing function.

Is this something that needs to be fixed by the browser, or Plasma's wayland implementation?


SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Kernel Version: 5.12.1-arch1-1
OS Type: 64-bit
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 4750U with Radeon Graphics
Memory: 14.9 GiB of RAM
Graphics Processor: AMD RENOIR

ADDITIONAL INFORMATION

Comment 1 Vlad Zahorodnii 2021-05-15 10:37:52 UTC

Please report this issue to firefox developers. If this is a kwin bug, reopen this bug report.

Comment 2 physkets 2021-05-15 12:22:50 UTC

There is an issue in the Firefox bug-tracker:
https://bugzilla.mozilla.org/show_bug.cgi?id=1626883

But there isn't yet any information on what the cause is.

Comment 3 physkets 2021-05-17 13:33:33 UTC

The same issue is also being discussed in Mutter/Gnome:

https://gitlab.gnome.org/GNOME/mutter/-/issues/1184

One of the folks seems to suggest that it is an issue with Pipewire; that they haven't yet implemented "cursor metadata", but there seem to commits to that end:

https://gitlab.freedesktop.org/search?group_id=10138&project_id=4753&repository_ref=master&scope=commits&search=cursor+metadata&snippets=false

and no open issues about this problem. So I'm not sure where the issue is.