[HP ProOne 400 G5 20.0-in All-in-One, Conexant Generic, Speaker, Internal] No sound from internal speaker

[Danny Hsu]

[Reproduce steps]
1. Install 20.04 daily build on 4/9.
2. Do dist-upgrade after installation.
3. Go to System Setting->Sound->Output, press the test button.
4. There is no sound output while press the Front right and Front left button.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: u 1358 F.... pulseaudio
 /dev/snd/pcmC0D0c: u 1358 F...m pulseaudio
 /dev/snd/pcmC0D0p: u 1358 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 10 04:11:26 2020
InstallationDate: Installed on 2020-04-10 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200409)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: u 1358 F.... pulseaudio
 /dev/snd/pcmC0D0c: u 1358 F...m pulseaudio
 /dev/snd/pcmC0D0p: u 1358 F...m pulseaudio
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [HP ProOne 400 G5 20.0-in All-in-One, Conexant Generic, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/26/2019
dmi.bios.vendor: HP
dmi.bios.version: R12 Ver. 02.03.01
dmi.board.name: 85A2
dmi.board.vendor: HP
dmi.board.version: KBC Version 08.93.00
dmi.chassis.type: 13
dmi.chassis.vendor: HP
dmi.modalias: dmi:bvnHP:bvrR12Ver.02.03.01:bd09/26/2019:svnHP:pnHPProOne400G520.0-inAll-in-One:pvr:rvnHP:rn85A2:rvrKBCVersion08.93.00:cvnHP:ct13:cvr:
dmi.product.family: 103C_53307F HP ProOne
dmi.product.name: HP ProOne 400 G5 20.0-in All-in-One
dmi.product.sku: 6AE44AV
dmi.sys.vendor: HP