[20UHZ5DXUS, ATI R6xx HDMI, Digital Out, HDMI] [Lenovo T14s-AMD] No sound at all when the audio output from HDMI port.

[Gabriel Zhi Chen]

No sound at all when the audio output from HDMI port.

[Steps to reproduce]
1. Install the daily build image on Lenovo T14s-AMD
2. Login the system
3. Connect the HDMI port with a Monitor
4. Select the 'Output Device' is HDMI
5. Try to play sound from the monitor

[Actual result]
No sound at all when the audio output from HDMI port.
The internal speaker works normally.

[Test image]
http://cdimage.ubuntu.com/ubuntu/daily-live/current/hirsute-desktop-amd64.iso

[Test Device]
https://certification.canonical.com/hardware/202006-27964

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: u 1424 F.... pulseaudio
 /dev/snd/controlC1: u 1424 F.... pulseaudio
 /dev/snd/controlC0: u 1424 F.... pulseaudio
 /dev/snd/pcmC0D0c: u 1424 F...m pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 23 06:18:01 2021
InstallationDate: Installed on 2021-04-23 (0 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
Symptom_Card: HD-Audio Generic - HD-Audio Generic
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: u 1424 F.... pulseaudio
 /dev/snd/controlC1: u 1424 F.... pulseaudio
 /dev/snd/controlC0: u 1424 F.... pulseaudio
 /dev/snd/pcmC0D0c: u 1424 F...m pulseaudio
Symptom_Jack: Digital Out, HDMI
Symptom_Type: No sound at all
Title: [20UHZ5DXUS, ATI R6xx HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/15/2020
dmi.bios.release: 1.24
dmi.bios.vendor: LENOVO
dmi.bios.version: R1CET55T(1.24 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20UHZ5DXUS
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.24
dmi.modalias: dmi:bvnLENOVO:bvrR1CET55T(1.24):bd09/15/2020:br1.24:efr1.24:svnLENOVO:pn20UHZ5DXUS:pvrThinkPadT14sGen1:rvnLENOVO:rn20UHZ5DXUS:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T14s Gen 1
dmi.product.name: 20UHZ5DXUS
dmi.product.sku: LENOVO_MT_20UH_BU_Think_FM_ThinkPad T14s Gen 1
dmi.product.version: ThinkPad T14s Gen 1
dmi.sys.vendor: LENOVO

[AaronMa (mapengyu)]

Tested on Sideswipe2-AMD, it used a new version of BIOS R1CET56W.

HDMI audio works fine.