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[Charles <2110047@xxxxxxxxxxxxxxxxxx>]

Thank you for reporting the bug. Please may you attach the output of
`journalctl -b` when this next happens, and also the output of `lsusb`.

** Changed in: pipewire (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2110047

Title:
  Pipewire occasionally loses my USB interfaces

Status in pipewire package in Ubuntu:
  Incomplete

Bug description:
  I use Behringer X32 Producer and Steinberg UR 22 mk II as my USB audio
  interfaces. I didn't have any problems on Ubuntu 22.04, but when I
  upgraded to Ubuntu 24.04 LTS, my interfaces started to disappear.

  Steps to reproduce (doesn't happen always), with Ubuntu constantly
  running:

  1) Switch the audio interfaces off (or disconnect the USB)

  2) Switch the audio interfaces back on

  3) Go to Ubuntu's audio settings

  What happens:

  - No external interfaces are listed. I have to run "systemctl --user
  restart pipewire pipewire-pulse" to get them back.

  - They are still seen by e.g. Audacity via ALSA, so this is definitely
  an issue with the Ubuntu stuff.

  What should happen:

  - The interfaces should be always re-detected automatically after a
  power cycle and visible in the audio settings.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: pipewire 1.0.5-1ubuntu3
  ProcVersionSignature: Ubuntu 6.8.0-57.59-generic 6.8.12
  Uname: Linux 6.8.0-57-generic x86_64
  NonfreeKernelModules: zfs nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.28.1-0ubuntu3.5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Tue May  6 15:58:54 2025
  InstallationDate: Installed on 2019-11-09 (2005 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: pipewire
  UpgradeStatus: Upgraded to noble on 2025-03-31 (36 days ago)

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