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PC：Lenovo YOGA 14C Intel EVO CPU：i5-1135G7
sound card：
cat /proc/asound/cards
0 [sofhdadsp ]: sof-hda-dsp - sof-hda-dsp
LENOVO-82DG-Yoga14cITL2021-LNVNB161216
others info：
inxi -SMA
System: Host: rick Kernel: 5.8.0-53-generic x86_64 bits: 64 Desktop: Gnome
3.36.7
Distro: Ubuntu 20.04.2 LTS (Focal Fossa)
Machine: Type: Convertible System: LENOVO product: 82DG v: Yoga 14cITL 2021
serial: <superuser/root required>
Mobo: LENOVO model: LNVNB161216 v: SDK0L77769 WIN serial:
<superuser/root required>
UEFI: LENOVO v: F5CN34WW date: 08/25/2020
Audio: Device-1: Intel driver: sof-audio-pci
Sound Server: ALSA v: k5.8.0-53-generic
This laptop was Windows10 before I install Ubuntu-OS，since I installed
Ubuntu-OS，there is no sound in SPEAKER anymore, but it still works when
I'm using headphone.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.8.0-53.60~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.17
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rick 25469 F.... pulseaudio
/dev/snd/pcmC0D0p: rick 25469 F...m pulseaudio
/dev/snd/pcmC0D6c: rick 25469 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat May 15 15:51:48 2021
InstallationDate: Installed on 2021-05-12 (2 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:sofhdadsp failed
Symptom_Card: sof-hda-dsp - sof-hda-dsp
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [82DG, Realtek ALC287, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/25/2020
dmi.bios.release: 1.34
dmi.bios.vendor: LENOVO
dmi.bios.version: F5CN34WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0L77769 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Yoga 14cITL 2021
dmi.ec.firmware.release: 1.34
dmi.modalias:
dmi:bvnLENOVO:bvrF5CN34WW:bd08/25/2020:br1.34:efr1.34:svnLENOVO:pn82DG:pvrYoga14cITL2021:rvnLENOVO:rnLNVNB161216:rvrSDK0L77769WIN:cvnLENOVO:ct31:cvrYoga14cITL2021:
dmi.product.family: Yoga 14cITL 2021
dmi.product.name: 82DG
dmi.product.sku: LENOVO_MT_82DG_BU_idea_FM_Yoga 14cITL 2021
dmi.product.version: Yoga 14cITL 2021
dmi.sys.vendor: LENOVO
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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[82DG, Realtek ALC287, Speaker, Internal] No sound at all
https://bugs.launchpad.net/bugs/1928534
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