Bug 476655

Summary:	Clicking on windows/desktops in the new overview/grid effect no longer works after a remote desktop/input connection is started on Wayland
Product:	[Plasma] kwin	Reporter:	Prajna Sariputra <putr4.s>
Component:	effects-overview	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ahiemstra, nate, niccolo, nicolas.fella, xaver.hugl
Priority:	NOR	Keywords:	qt6
Version First Reported In:	master
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Prajna Sariputra 2023-11-07 01:20:19 UTC

SUMMARY
In my Plasma 6 Wayland session installed from kdesrc-build, if I start a remote desktop/input connection (for example using KDE Connect's remote input function or Krfb) and move the mouse through there clicking on windows/desktops in the new overview/grid effect no longer works, unless I use the remote input session to do the clicks.

The search bar still responds to clicks though, as do the search results after I type stuff in. Keyboard inputs as well as touchpad gestures also still work.

I tried stopping the remote desktop/input session from the tray icon, restarting xdg-desktop-portal-kde as well as closing Krfb and kdeconnectd, none of those fix the problem, only logging out and back in (so presumably restarting KWin) works.

The old overview and grid effects in my Plasma 5.27.9 session didn't have this problem.

STEPS TO REPRODUCE
1. Start a Plasma 6 Wayland session
2. Start KDE Connect/Krfb and move the mouse through those apps at least slightly
3. Open the overview/grid effect
4. Click on a window/desktop (not through KDE Connect/Krfb)

OBSERVED RESULT
The overview/grid does not respond to mouse clicks.

EXPECTED RESULT
The overview/grid responds to the clicks as normal.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.80
KDE Frameworks Version: 5.240.0
Qt Version: 6.6.0
Kernel Version: 6.5.9-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 6800H with Radeon Graphics
Memory: 30.6 GiB of RAM
Graphics Processor: AMD Radeon Graphics

ADDITIONAL INFORMATION
kwin is at commit d0a9e907164dc4a9174047a13cb9ddd6878b1fd4, and xdg-desktop-portal-kde is at commit af0b4d1c463f5c9f47137798e49ef6e2d465c11e.

Also, the hot corners also seem to have a similar issue, where sometimes after I use the remote input session to trigger them doing it with the actual mouse/touchpad no longer works unless I trigger them with the remote input again, but that issue is also present in Plasma 5, and rather intermittent/random (which is why I haven't reported it).

Comment 1 Prajna Sariputra 2023-11-07 01:23:40 UTC

Oh wait, actually the search results only respond to my mouse clicks sometimes instead of always after starting the remote input session, the search bar itself still seems reliable though.

Comment 2 Nate Graham 2023-11-08 21:29:23 UTC

Fascinating. Maybe some conflict over multiple things trying to use stream the same window using KPipeWire?

Comment 3 Nicolas Fella 2024-01-29 21:34:07 UTC

Is this still happening? It seems to work fine for me

> Maybe some conflict over multiple things trying to use stream the same window using KPipeWire?

There's no pipewire involved in KDE Connect's remote input. It seems plausible that multiple input sources cause problems tough

Comment 4 Prajna Sariputra 2024-01-29 22:46:46 UTC

It's still happening for me with Plasma and KDE Conmect from git master.

Comment 5 Prajna Sariputra 2024-01-30 04:10:19 UTC

I just tested a freshly updated KDE Neon Unstable QEMU/libvirt VM, and I can reproduce this bug there too by using the KDE Connect app on the host to move the mouse in the VM.

Comment 6 Nicolas Fella 2024-01-30 11:50:23 UTC

I can reproduce it on one machine (with Qt 6.6.1) but not on another (with Qt 6.7)

Comment 7 Prajna Sariputra 2024-02-24 13:09:39 UTC

Huh, just tested this again and apparently it got fixed somehow at some point?

Now I have Qt 6.6.2, KWin at f349d8e13274e34afcd4b52c43abb3f134ed6cca and xdg-desktop-portal-kde at 05d0873850b75ee8a045b9a56791acfffd1342ab, from git master, compiled sometime on 19 Feb.