[Bug 300254] snd_uaudio: hotplugging not working on Tiger Lake

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=300254

            Bug ID: 300254
           Summary: snd_uaudio: hotplugging not working on Tiger Lake
           Product: Base System
           Version: 15.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: feld@FreeBSD.org

Created attachment 276696
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=276696&action=edit
dmesg.boot

This problem does not exist on some other hardware I have so it is probably
localized to this Dell Latitude 3520 laptop.

In order to hotplug it on this computer I always have to unload the snd_uaudio
module otherwise the DAC is recognized and appears functional, but will never
output any audio. I have a script I manually run after hotplugging to set this
device as default, so I know it's not something obvious like that. It
immediately works again after the module is cleanly loaded again. It also
doesn't seem to matter if I use the same USB port or choose another one.

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