Public bug reported:

Summary
=======

Internal speakers work as expected, but when plugging headphones through
the 3.5mm jack, the "Select Audio Device" panel doesn't show up (it
normally shows up to allow user to select what kind of device has been
plugged in, be it headphones, microphone or headset). In the Sound
Settings, the Output Device automatically switches to "Headphones - sof-
hda-dsp", but no sound can be heard even though the vumeter in the Sound
Settings moves!

Steps to reproduce
==================

1. Install focal beta
2. Make sure the sound works as expected using the internal speakers and an 
audio file or Youtube
3. Plug headphones in jack 3.5mm interface

Expected Results
================

- In Sound Settings, the headphones are automatically selected as output device
- In Sound Settings, the vumeter under the Output Device moves according to the 
sound
- Sound can be heard through the headphones


Actual results
==============

- In Sound Settings, the headphones are automatically selected as output device 
(OK)
- In Sound Settings, the vumeter under the Output Device moves according to the 
sound (OK)
- No sound can be heard (Not OK)

Attached are output of `pactl info` and `pactl list` before and after
plugging headphones, while playing a tune on Bandcamp in Firefox.


Additional Info
===============

Ubuntu: 20.04 beta image
Certified device: <https://certification.ubuntu.com/hardware/201905-27083>
system-manufacturer: Dell Inc.
system-product-name: Vostro 5590
bios-version: 1.1.0
CPU: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8x)
GPU: 00:02.0 VGA compatible controller [0300]: Intel Corporation Device 
[8086:9b41] (rev 02)
01:00.0 3D controller [0302]: NVIDIA Corporation Device [10de:1d13] (rev a1)
kernel-version: 5.4.0-21-generic

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio 1:13.99.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu24
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  pieq       1768 F.... pulseaudio
 /dev/snd/pcmC0D0p:   pieq       1768 F...m pulseaudio
 /dev/snd/pcmC0D6c:   pieq       1768 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr  7 16:33:27 2020
InstallationDate: Installed on 2020-04-07 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.0
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.1.0:bd07/18/2019:svnDellInc.:pnVostro5590:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
dmi.product.family: Vostro
dmi.product.name: Vostro 5590
dmi.product.sku: 095A
dmi.sys.vendor: Dell Inc.

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1871329

Title:
  No "Select Audio Device" panel when plugging headphones, and no sound
  output to headphones

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