On Wed, 29 Sep 2021 14:17:01 -0400
murph nj <murphnj+fed...@gmail.com> wrote:

> I'm having an issue shutting down.

[snip]

> I haven't found anything interesting in /var/log/messages regarding
> it.
> 
> Any suggestions to further troubleshooting?

I think this is an artifact of the shutdown process.  It is supposition
on my part, but I think it is just like the startup process, so that
things are shutdown asynchronously.  Thus from time to time, a
dependency is not met because something is too slow or too fast, and it
leads to a race condition, and the outcome you are seeing.  I also
occasionally see the same thing (in rawhide, future F36), but for a
different process. I think the last one I saw was for something called
'User Manager'.  You might also check the journal with 
journalctl -r
and page down to the last shutdown.  It is possible systemd placed a
message there preferentially.  Is there any kind of message about
waiting for something? Other than that, it would require digging into
the scheduling of systemd during shutdown, looking at dependencies for
the process you are waiting on, and tweaking timings through trial and
error to see which removes it.  Infeasible, I think.  If systemd had a
synchronous (sequential) startup and shutdown, these could be
deterministically tuned out, but it would probably be much slower on
both sides.

You could open a bugzilla just in case someone knowledgeable
immediately recognizes the problem and fixes it.  Or, the next time
they are tweaking that area, they might remember it and have a look for
anything obvious.
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