Public bug reported:

(Reporting for blind user ken)

gnome-control-center sound is forcing the selection of an input device
you do not have consent to use.    The only option listed is CM108
microphone.   None is not an option; it needs to be.  Motherboard audio
is also missing.

Just because an audio device exists does not mean you have consent to
use it for desktop audio purposes.  NONE must always be an option.
Audio output device also lacks none, though in this case it isn't
causing an issue because there is another audio output device.  However,
using this audio output device without permission is a federal crime.
Unauthorized radio transmissions are not allowed.

Reproduce:
* 
* Plug in  digirig mobile which contains a USB hub, CM108 audio, and CP210 
serial and ham radio rig interface circuitry.   
* Enable pipewire as described here: 
https://gist.github.com/the-spyke/2de98b22ff4f978ebf0650c90e82027e?permalink_comment_id=4116017
* Open control-center sound.
* Try to set output device to none.

Ubuntu 22.04.2 LTS Linux ken-OptiPlex-760 5.15.0-69-generic #76-Ubuntu
SMP Fri Mar 17 17:19:29 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux


This is by no means the only audio device that is not yours to use 
indiscriminately.  There are many uses for audio devices that are not for user 
interaction.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-control-center 1:41.7-0ubuntu0.22.04.6
ProcVersionSignature: Ubuntu 5.15.0-69.76-generic 5.15.87
Uname: Linux 5.15.0-69-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.4
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 15 18:17:39 2023
InstallationDate: Installed on 2018-05-05 (1806 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to jammy on 2022-12-05 (131 days ago)

** Affects: gnome-control-center (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy

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https://bugs.launchpad.net/bugs/2016395

Title:
  control-center sound using audio devices without consent

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