https://bugs.kde.org/show_bug.cgi?id=519987

            Bug ID: 519987
           Summary: Plasma freezes for ≈1s when Evolution is running and
                    the last window is minimized
    Classification: Plasma
           Product: plasmashell
      Version First 6.6.4
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: generic-performance
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: 1.0

Not sure if this is really a new issue. There are already plenty of
clipboard-related issues where “timeout reading from pipe” appears in the
journal:

- Bug 517450
- Bug 519485
- Bug 518205
- Bug 517927
- Bug 516315
- Bug 515305

However, these bugs all talk about copying while in my case nothing is copied.
In my case, the clipboard is empty.


STEPS TO REPRODUCE

1. Freshly login to a Plasma session such that the clipboard is empty. (You
might have to disable saving clipboard contents across desktop sessions.)
2. Start Evolution and maybe some other applications.
3. Minimize all windows one by one. After minimizing the last window, Plasma
freezes for ≈1s.
4. The effect can be repeated when restoring and minimizing again.


After a freeze, the following appears in the journal:

> … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> … plasmashell[…]: QWaylandDataOffer: error reading data for mimeType 
> text/plain

When trying several times, it looks like this, where the first four line appear
only once at the beginning:

> May 10 15:39:03 … plasmashell[…]: DataControlOffer: timeout reading from pipe 
> for mimeType text/plain
> May 10 15:39:04 … plasmashell[…]: DataControlOffer: timeout reading from pipe 
> for mimeType text/plain
> May 10 15:39:05 … plasmashell[…]: DataControlOffer: timeout reading from pipe 
> for mimeType text/plain
> May 10 15:39:06 … plasmashell[…]: DataControlOffer: timeout reading from pipe 
> for mimeType text/plain
> May 10 15:39:07 … plasmashell[…]: DataControlOffer: timeout reading from pipe 
> for mimeType text/plain
> May 10 15:39:18 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:18 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain
> May 10 15:39:25 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:25 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain
> May 10 15:39:31 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:31 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain
> May 10 15:39:35 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:35 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain
> May 10 15:39:37 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:37 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain
> May 10 15:39:39 … plasmashell[…]: QWaylandDataOffer: timeout reading from pipe
> May 10 15:39:39 … plasmashell[…]: QWaylandDataOffer: error reading data for 
> mimeType text/plain


SOFTWARE/OS VERSIONS

Operating System: Arch Linux 
KDE Plasma Version: 6.6.4
KDE Frameworks Version: 6.26.0
Qt Version: 6.11.0
Kernel Version: 7.0.5-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-4790 CPU @ 3.60GHz
Memory: 24 GiB of RAM (23,4 GiB usable)
Graphics Processor: AMD Radeon HD 7700 Series
Manufacturer: ASUS
Product Name: All Series

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