Bug 470737

What happens with Wayland?

SUMMARY
The layout indicator in KDE (apparently) randomly disappears from the panel under unknown conditions. Layout switching still works, though.
I don't change any settings, but the problem persists.
Sometimes i just notice it's gone, and to return it i need to change locale settings. For example, switching "OSD on layout change" option on/off returns the indicator.
I tried:
1. Installing a flatpak version of Telegram (it could be the culprit, but it wasn't)
2. Setting options of the tray to always display the indicator (was set to "show when relevant"), nothing changed

OBSERVED RESULT
The keyboard indicator randomly disappears from the system tray (completely).

EXPECTED RESULT
Should be always shown when it's set to.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.1.32-1-lts
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9

ADDITIONAL INFORMATION
X11

Created attachment 159510 [details]
Journalctl logs

It still doesn't answer the question? ^

(In reply to Andrey from comment #1)
> What happens with Wayland?

I don't use it. I tried to switch, but encountered a bunch of problems i don't have on X11 or had fixed them.
Also, the bug started to show up even before i've switched to Arch (was Manjaro, previously). 1.5 month in total, approximately.

Can you try to reproduce on Wayland at least? It's important to further investigation.

I'll try to, but i can't even reliably reproduce it on X11. As i said, it occurs randomly.
I also just noticed that "OSD on layout change" was doing nothing on X11 (excluding "fixing" the layout indicator) while on wayland it actually shows an OSD. Mb it's somehow related.
Also, i had completely wiped system files and configs during my switch to Arch, but left user folders untouched. So it may be related to my user space itself.

Is the screenshot showing the right thing? It doesn't appear to show anything from Plasma.

Created attachment 159531 [details]
The disappeared indicator

Can it be somehow related to your USB/Bluetooth keyboard become reattached or something like this?

Try also to find correlation with this lines in the log when it happens:
Jun 07 11:06:14 agenda plasmashell[934]: file:///usr/share/plasma/plasmoids/org.kde.plasma.keyboardlayout/contents/ui/main.qml:23: TypeError: Value is undefined and could not be converted to an object
Jun 07 11:06:14 agenda plasmashell[934]: file:///usr/share/plasma/plasmoids/org.kde.plasma.keyboardlayout/contents/ui/main.qml:86: TypeError: Value is undefined and could not be converted to an object
Jun 07 11:06:14 agenda plasmashell[934]: file:///usr/share/plasma/plasmoids/org.kde.plasma.keyboardlayout/contents/ui/main.qml:63: TypeError: Value is undefined and could not be converted to an object

Also, as a quick hack, try to comment out this line in the .qml file and see if it helps (restart Plasma after that):
        Plasmoid.status: hasMultipleKeyboardLayouts ? PlasmaCore.Types.ActiveStatus : PlasmaCore.Types.HiddenStatus
https://invent.kde.org/plasma/plasma-desktop/-/blob/master/applets/keyboardlayout/contents/ui/main.qml#L28

(In reply to Andrey from comment #10)
> Can it be somehow related to your USB/Bluetooth keyboard become reattached
> or something like this?

My PC has no Bluetooth. The only USB device i periodically reattach is my webcam.

That webcam actually might be the reason, we have related fix which wasn't merged.
Could you retest without it?

(In reply to Andrey from comment #12)
> Also, as a quick hack, try to comment out this line in the .qml file and see
> if it helps (restart Plasma after that):
>         Plasmoid.status: hasMultipleKeyboardLayouts ?
> PlasmaCore.Types.ActiveStatus : PlasmaCore.Types.HiddenStatus
> https://invent.kde.org/plasma/plasma-desktop/-/blob/master/applets/
> keyboardlayout/contents/ui/main.qml#L28

This seems to have solved it. Or at least i didn't notice it happen again. Now the indicator "freezes", showing the wrong layout until i press the switch combination again.
Some software has been updated through this time, though:
* Linux 6.1.33-1-lts
* KDE Plasma Version: 5.27.5
* KDE Frameworks Version: 5.107.0
* Qt Version: 5.15.10

So it "fixes" a symptom and not the reason.
For the reason, patch I mentioned above might be useful.
But first I wish you test without the webcam or other auxiliary USB devices.

(In reply to Andrey from comment #16)
> So it "fixes" a symptom and not the reason.
> For the reason, patch I mentioned above might be useful.
> But first I wish you test without the webcam or other auxiliary USB devices.

Not "fixes", actually. A few hours ago it stuck completely and i had to use that checkbox in settings again.

(In reply to Andrey from comment #16)
> For the reason, patch I mentioned above might be useful.
> But first I wish you test without the webcam or other auxiliary USB devices.

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
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If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

(In reply to Andrey from comment #18)
> (In reply to Andrey from comment #16)
> > For the reason, patch I mentioned above might be useful.
> > But first I wish you test without the webcam or other auxiliary USB devices.

It's indeed probably related to the webcam. As i plug it in, i sometimes notice the bug in an hour or less.

(In reply to Foresteam from comment #20)
> (In reply to Andrey from comment #18)
> > (In reply to Andrey from comment #16)
> > > For the reason, patch I mentioned above might be useful.
> > > But first I wish you test without the webcam or other auxiliary USB devices.
> 
> It's indeed probably related to the webcam. As i plug it in, i sometimes
> notice the bug in an hour or less.

Immediately, actually.

This might be the fix, any chance you could check it yourself? Compiling involved:
https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/951