https://bugs.kde.org/show_bug.cgi?id=449163
rsvensson.ma...@gmail.com changed:
What |Removed |Added
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CC| |rsvensson.ma...@gmail.com
--- Comment #64 from rsvensson.ma...@gmail.com ---
(In reply to Robert from comment #63)
> I have also been experiencing this bug, and it seemed to be happening on its
> own after random time intervals but I managed to get it to happen
> consistently and immediately. It's possible this comment should be a
> new/separate bug with the same behavior, but I think it's very possible
> people are not actually doing NOTHING until the taskbar becomes
> unresponsive. I personally did not observe the taskbar freezing if I truly
> did nothing with the computer.
>
> Providing additional steps to reproduce that may lead to a fix:
>
> STEPS TO REPRODUCE
> 1. Boot into Plasma Desktop under Wayland.
> 2. Right click task manager -> Configure icons-only task manager ->
> Icons-only task manager settings -> Behavior.
> 3. Set "Group" to "by program name".
> 4. Enable "Mouse wheel cycles through tasks", apply if needed.
> 5. Open multiple windows of any one application that supports multiple
> windows (I tried this separately with Firefox, Dolphin, and Konsole).
> 6. Position the cursor over the icon in the icons-only task manager for that
> application.
> 7. Use the mouse wheel to cycle between open windows of that application.
> 8. Notice the unresponsiveness of the panel.
>
> Using the mouse wheel to switch between open windows consistently and
> immediately (or within a few seconds) renders the panel unresponsive.
> Sometimes, changing the grouping or mouse wheel scroll settings in task
> manager settings and applying will also cause this behavior.
>
> For me at least, this bug is tied directly to "mouse wheel: cycles through
> tasks" for programs "grouped: by program name" in the icons-only task
> manager. Using Latte-dock instead may be a temporary workaround for some.
>
> Can anyone confirm if they were experiencing this bug when doing absolutely
> nothing at all, just leaving the computer idle for x amount of time? Are you
> also able to reproduce with the steps provided / is it applicable to you?
>
> I would look into fixing this myself, but I'm not experienced with OS,
> Kernel, or Desktop development so it would take me a WHILE to find the
> source code, branch and parse through the source code, learn the appropriate
> language(s), set up a testing environment, fix it on my end, and
> push/request merge the fix. Hopefully this helps someone on the KDE team
> close this bug.
>
> PS: please go easy on me, this is my first comment here so I might not know
> this specific group's standards.
>
> RELATED NOTES
> * Steps 2-4 may be default settings, which could also explain why the issue
> is so pervasive.
> * Scrolling just on the taskbar to cycle through all windows does not
> produce the result, it is only when hovering over a grouped icon which
> limits the cycle to a single application.
> * Clicking to cycle also does NOT produce the result, only scrolling.
> * I saw somewhere that it could be tied to virtual desktops or other
> widgets, but none were the case for me.
> * Seems to be an issue across distros, KDE versions, AMD and Intel CPUs, and
> AMD and NVidia graphics cards.
> * Linking a related Reddit thread with more people experiencing this issue.
> It does not have this insight, but has a good summary from KDE ruling things
> out:
> https://www.reddit.com/r/kde/comments/snhb2c/
> kde_panel_plasma_frozen_what_to_try/
> * The task manager will generally still open a program if you click on the
> icon, even though visually it is unresponsive.
>
> Since it's not listed here, I'm generally running the following command to
> reset the taskbar, which may have different behavior from `plasmashell
> --replace` but there seem to be variations of a similar thing:
>
> ```
> systemctl --user restart plasma-plasmashell.service
> ```
>
> ABOUT THIS SYSTEM
> Operating System: openSUSE Tumbleweed 20230902
> KDE Plasma Version: 5.27.7
> KDE Frameworks Version: 5.109.0
> Qt Version: 5.15.10
> Kernel Version: 6.4.11-1-default (64-bit)
> Graphics Platform: Wayland
> Processors: 12 × AMD Ryzen 5 3600X 6-Core Processor
> Memory: 15.5 GiB of RAM
> Graphics Processor: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2
I can also confirm this behavior. In my case however it DOES happen with
ungrouped windows. In fact when testing it just now I didn't have any grouped
windows in the task manager at all. Just hovering above any given window's icon
in the task manager and scrolling will immediately freeze the panel for me like
how it's described in the initial report. My task manager settings are however
the same as yours otherwise.
Whether or not this is a separate issue I'm not sure, but at least it's a
consistent repro of the effects of the original reported bug. I will say though
that I never use the scroll wheel to switch between windows normally, and still
experience the issue frequently. So it seems to be triggered by something else
too, perhaps some other window switching/focus related action.
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