[HDA-Intel - HDA Intel PCH, playback] fails after a while

Output device keeps defaulting back to "Dummy Device". "Digital Surround 5.1 (HDMI) Output" is not available.

1. When sound is set back to its previous setting of "HDMI / DisplayPort - BuiltIn Audio" then the previous selection of "Digital Surround 5.1 (HDMI) Output" (and 7.1) is not available.
2. When sound is set to "Speakers Built-In Audio", then switched back to "HDMI / DisplayPort - BuiltIn Audio" then "Digital Surround 5.1 (HDMI) Output" IS available and the audio works correctly.

When the TV / Amplifier is turned off, then back on, the audio again defaults back to "Dummy Device" forcing a repeat of scenario 2 in order to get it working again.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 5.19.0-35.36~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-35-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: adlet 153650 F.... pulseaudio
 /dev/snd/pcmC0D3p: adlet 153650 F...m pulseaudio
 /dev/snd/pcmC0D0c: adlet 153650 F...m pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 17 19:54:52 2023
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_PulseAudioLog:

Symptom_Type: Sound works for a while, then breaks
Title: [HDA-Intel - HDA Intel PCH, playback] fails after a while
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/06/2021
dmi.bios.release: 5.19
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: X532EQ.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X532EQ
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrX532EQ.300:bd01/06/2021:br5.19:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX532EQ_S532EQ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX532EQ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: VivoBook
dmi.product.name: VivoBook_ASUSLaptop X532EQ_S532EQ
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.