Bug 509557

Summary:	Clicking taskbar apps not displaying widgets
Product:	[Plasma] plasmashell	Reporter:	Paul <mail>
Component:	System Tray widget	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	fgonzalez.neso, materka, nate
Priority:	NOR
Version First Reported In:	6.4.5
Target Milestone:	1.0
Platform:	EndeavourOS
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	attachment-2940034-0.html

Description Paul 2025-09-16 15:32:04 UTC

SUMMARY


STEPS TO REPRODUCE
1. Click the volume icon on the taskbar (or the network icon)
2. Observe that the volume widget does not open, the icon becomes underlined like it is selected, but no widget
3. If you did not observe #2, leave your computer running overnight and try again in the morning? It's a bit random and usually fixes when I restart.

OBSERVED RESULT
Volume widget does not open, the icon becomes underlined like it is selected, but no widget


EXPECTED RESULT
Volume widget opens

SOFTWARE/OS VERSIONS
Windows: No
macOS: No
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.7-arch1-1 (64 bit)
Graphics Platform: Wayland

ADDITIONAL INFORMATION
This wasn't happening until a recent system update probably within the last couple weeks, and now it happens about once a day or every other day.
Running `journalctl --user -f` showed no additional logs while it was happening and clicking the taskbar icons.
Restarting plasmashell fixes it, e.g. `killall plasmashell; kstart plasmashell`

Comment 1 Paul 2025-09-16 15:38:50 UTC

Apparently I missed the summary section and I can't edit the post. Here's a summary:

Clicking systemtray icons such as volume or network randomly stop opening their respective widgets, instead just showing the outline and the dropdown error changes like normal, but no widget. Once it happens, widgets stop opening until a reboot or plasmashell is restarted.

Comment 2 Nate Graham 2025-09-16 22:03:47 UTC

Do you have an NVIDIA GPU?

Comment 3 Paul 2025-09-16 22:06:55 UTC

Created attachment 184987 [details]
attachment-2940034-0.html

Yes Nvidia 3080 - Driver: 580.82.09

On Tue, Sep 16, 2025, at 5:03 PM, Nate Graham wrote:
> https://bugs.kde.org/show_bug.cgi?id=509557
> 
> Nate Graham <nate@kde.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>          Resolution|---                         |WAITINGFORINFO
>                  CC|                            |nate@kde.org
>              Status|REPORTED                    |NEEDSINFO
> 
> --- Comment #2 from Nate Graham <nate@kde.org> ---
> Do you have an NVIDIA GPU?
> 
> -- 
> You are receiving this mail because:
> You reported the bug.

Paul Hansen
mail@paul.rs
https://github.com/paul-hansen

Comment 4 Nate Graham 2025-09-17 14:44:23 UTC

Thanks. Looks like the same issue as Bug 480800, or a recurrence of it.

That issue had to be fixed in Qt. There may be another change in Qt required if this issue is coming back. :/ Or it could be a regression in the NVIDIA driver itself. Either way, it's an issue somewhere upstream, not in Plasma itself.

*** This bug has been marked as a duplicate of bug 480800 ***

Comment 5 frankgrimy 2025-10-01 04:32:49 UTC

I'm having the same problem on my Fedora Asahi installation (M1 Macbook Air 2020), and noticed that the widgets stop displaying if I:

1. Open the widget (such as the System tray, Sensor, Calendar and Kickoff)
2. Click on another opened window (in my case, I've tested this with Firefox, Dolphin and System settings)
3. Try to open said widget, but then it doesn't come up

The bug can be avoided if I click the widget button to "manually" close it.

Sometimes, even the Hover Task to Preview action stops working.  This occurs when I hover over active tasks and then move the pointer to applications that have some kind of interactive highlighting of UI elements, like Firefox hyperlinks or Dolphin displayed files, all of this quickly enough to do it before the Preview closes.