Task-switcher (meta+W) does not respond to keyboard input

[slartibart70]

Hi, since last update i encounter a non-working keyboard in all of the 'present windows' functions of plasma. That is, toggle-overview (meta+w) and any present windows (meta-f7, meta-f9 and the like) This was working already, mouse is ok, but not even the search input field is accepting any input (even if i select the field with the mouse) Not even ESC is accepted, although pressing meta-w again leaves the toggle-overview

any ideas?

---

Operating System: Fedora Linux 36 KDE Plasma Version: 5.25.5 KDE Frameworks Version: 5.98.0 Qt Version: 5.15.5 Kernel Version: 5.19.9-200.fc36.x86_64 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-7820HQ CPU @ 2.90GHz Memory: 31,1 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 630 Manufacturer: LENOVO Product Name: 20J6003DGE System Version: ThinkPad T470p

[ZaWertun]

Maybe some new bug... Can't reproduce on my PC though. Try to test it with new user, maybe something was wrong in configuration files.

[ZaWertun]

Maybe this bug: https://bugs.kde.org/show_bug.cgi?id=459188 ? (Wayland only, can't be reproduced on Xorg)

[ZaWertun]

Just checked my other PC with NVidia - I can confirm this bug happening. Don't sure if it because using NVidia or what, on Intel (with X11) all is fine.

[ZaWertun]

Maybe related, running overview with NVidia spams with those messages:

ep 20 10:05:00 rapidus kwin_x11[3047]: file:///usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml:56:9: Unable to assign null to QUuid
Sep 20 10:05:00 rapidus kwin_x11[3047]: file:///usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml:56:9: Unable to assign null to QUuid
Sep 20 10:05:02 rapidus kwin_x11[3047]: file:///usr/share/kwin/effects/overview/qml/ScreenView.qml: Writing to "client" broke the binding to the underlying model
Sep 20 10:05:09 rapidus kwin_x11[3047]: file:///usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml:56:9: Unable to assign null to QUuid
Sep 20 10:05:09 rapidus kwin_x11[3047]: file:///usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml:56:9: Unable to assign null to QUuid

[ZaWertun]

Looks like this commit should fix it: https://invent.kde.org/plasma/kwin/-/commit/e6ae8fb6755398d3512863c7de6493360962118e. I'll try it on my home PC first.

[ZaWertun]

@slartibart70 This patch helps me:

--- /usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml.orig 2022-09-20 10:23:00.392314248 +0300
+++ /usr/lib64/qt5/qml/org/kde/kwin/private/effects/WindowHeap.qml      2022-09-20 10:23:12.725415620 +0300
@@ -53,7 +53,7 @@
         z: 2
         property KWinComponents.WindowThumbnailItem cloneOf
         visible: false
-        wId: cloneOf ? cloneOf.wId : null
+        wId: cloneOf ? cloneOf.wId : "00000000-0000-0000-0000-000000000000"
         width: cloneOf ? cloneOf.width : 0
         height: cloneOf ? cloneOf.height : 0
         onCloneOfChanged: {

I'll rebuild kwin package little later.

[slartibart70]

Thanks for looking into this. Strangely enough, it's back to a working state right now. One thing i did was to put the laptop to sleep overnight, and woke it up this morning. Overview effects are back to working (meta-w, meta-Fx), keyboard is ok, search-inputfield can be filled with characters I'll try to figure out what happened when it occurred the first time (for reproducibility)

[ZaWertun]

https://copr.fedorainfracloud.org/coprs/build/4866227

[ZaWertun]

Should be fixed in kwin-5.25.5-2.

[slartibart70]

seems to work! :heart:

[slartibart70]

Hi, since this update in fc36, the keyboard navigation seems broken again for Meta-W, mouse still works symptoms: neither cursor keys nor letter (for search) are available, ESC does not work any more Can you confirm?

Operating System: Fedora Linux 36 KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.101.0 Qt Version: 5.15.8 Kernel Version: 6.1.7-100.fc36.x86_64 (64-bit) Graphics Platform: X11

[slartibart70]

update / need to clarify: sometimes it's broken as described above. Now, after some longer screensaver period, it's ok again?? Very hard to track down what happened before. But maybe worth a look, that in some situations Meta-W does not react on any keypresses at all. Only mouse is working.

[ZaWertun]

Can't confirm this issue happens on Fedora 37 with Nvidia proprietary drivers. Tried it several times.

Check kwin logs maybe there is some new errors.

[slartibart70]

the error is back Meta-W, you see the overview, but none of the windows have the 'selected' surroundings (here, blue frame as visual indicator around the smaller views) which is movable with the cursor-keys. The keyboard is just dead in this situation.

I have journalctl -f -b 0 open, but no errors appearing when going into Meta-W

I'll upgrade to fc37 anyway (later) but this is definitely annoying (you provided frameworks 102 only for fc37, so that would be THE reason to switch :-)

[slartibart70]

since fc37 upgrade, i did not encounter this problem any more. Let's close it