The Windows Switcher installation is broken, resources are missing

[ArrayBolt3]

Submission type

• [x] Bug report
• [ ] Feature Request

Package name & version you are having issues with or have a request for

kwin6

Used repositories

kde-next, build, core, main, apps

Expected behaviour

Pressing Alt+Tab should reveal the task switcher as you flip through the stack of open windows.

Actual behaviour

No task switcher is shown, and an alert from "kdialog" appears with the text The Window Switcher installation is broken, resources are missing. Contact your distribution about this.

Steps to reproduce the problem

1. Open at least two windows.
2. Press Alt+Tab.

System info link created by Octopi > Tools > SysInfo

https://dpaste.com/8KNUFMBWN

[demmm]

Since I cannot reproduce on 2 systems (Alt-Tab just works) and an important part of the SysInfo is left empty (pacman.log is the most important for this), make sure to post your /var/log/pacman.log

[marco-parillo]

I have the same symptom, and other than the message, alt-tab seems to work fine for me. Anyway, my full pacman log is: https://raw.githubusercontent.com/marco-parillo/KaOS-Notes/main/pacman.log

[demmm]

On startup, it just worked, now with many windows open, I see the same, have either of you looked at the upstream bug reports for this already?

[demmm]

It looks to be this file that is not loading https://invent.kde.org/plasma/kwin/-/blob/master/src/tabbox/switchers/thumbnail_grid/contents/ui/main.qml?ref_type=heads

[ArrayBolt3]

I think it's a problem with the Midna theme based on log output:

Dec 24 12:19:35 user-optiplex9020 kwin_wayland[1712]: kwin_tabbox: Component failed to load:  QList(file:///usr/share/plasma/look-and-feel/org.kde.midna.desktop/contents/windowswitcher/WindowSwitcher.qml:94:29: PlasmaCore.IconItem >
                                                                                      PlasmaCore.IconItem {
                                                                                      ^)

See https://invent.kde.org/plasma/plasma-workspace/-/issues/82

EDIT: This is indeed part of the problem, tweaking that file has gotten me a working window switcher. I haven't found all of the issues yet, but I'm to the point where I get no more kdialog errors, and I see a stack of window icons pop out of the left side of my screen when I hit Alt+Tab. The journal log is filled with stuff though, so I'm debugging still.

[ArrayBolt3]

Assuming this is how it's supposed to look, I think I fixed it.

Here's the diff:

window_switcher_fix.txt

[demmm]

https://github.com/KaOSx/midna/commit/c279c1950c78a4e66fc305fc6e72983d823f708f should fix this issue No longer use separate theme files for desktop & window switchers, just use the upstream (moved to a lib) settings.