https://bugs.kde.org/show_bug.cgi?id=500400

cwo <cwo....@posteo.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|1.0                         |---
           Assignee|plasma-b...@kde.org         |kwin-bugs-n...@kde.org
            Version|git-stable-Plasma/6.3       |6.3.0
          Component|generic-crash               |generic-crash
            Summary|Launching applications can  |Launching applications can
                   |freeze plasmashell          |freeze kwin
            Product|plasmashell                 |kwin

--- Comment #4 from cwo <cwo....@posteo.net> ---
(In reply to ottergauze from comment #3)
> Ah, so it was a red herring, just as I feared. I've recategorised the
> report. Would the journalctl logs be enough to help narrow this down, should
> I go about providing more information?

I had a quick look, and there doesn't seem to be anything particularly obvious.
Maybe someone else can spot something though.

With a crash we would really need a crash report; but when the system is
hanging we don't really get a trace automatically, the way we usually do for
crashes.

We have some specific instructions about how to get debug information for
freezes which I'm pasting below, but if the whole screen is frozen, not just
the panels/desktop, this is likely kwin freezing, not plasmashell, and that
blocks the usual way of doing this. If you can still switch to a virtual
console it could work, or if you can ssh into the system from another one it's
maybe easiest. Also note that some distributions block attaching gdb to a
running process for security reasons, so you might need to enable that first.

Also, have you had this issue for a while or is it new with Plasma 6.3? There
is a known freezing issue with 6.3, but it appears when moving windows to the
top of the screen, see here: https://bugs.kde.org/show_bug.cgi?id=499913

----

Can you get a backtrace of what it's doing when it's hung?

Run gdb attach -p $(pidof kwin_wayland) in a terminal window while it's hung
If it says "--Type  for more, q to quit, c to continue without paging--" at the
bottom of the terminal window, press the "c" key.
When you see a prompt that says "(gdb)", type "bt" and press the enter key.
If it says "--Type  for more, q to quit, c to continue without paging--" at the
bottom of the terminal window, press the "c" key.
Copy-and-paste the contents of the terminal window into a comment here.

Thanks!

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