Internal speaker doesn't work after plug in a headset

[Rick Wu]

[Summary]
Internal speaker doesn't work after plug in a headset. In the meantime, audio for HDMI/Buletooth headset/wired headset are working fine. Only Internal speaker doesn't work. But internal speaker working well if not plug wired headset in.
CID:202010-28313 https://certification.canonical.com/hardware/202010-28313/

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: linux-image-5.11.0-14-generic 5.11.0-14.15
ProcVersionSignature: Ubuntu 5.11.0-14.15-generic 5.11.12
Uname: Linux 5.11.0-14-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu62
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: u 1512 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 16 05:07:59 2021
InstallationDate: Installed on 2021-04-16 (0 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210415)
MachineType: Dell Inc. Latitude 5520
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-14-generic root=UUID=8bcd3f6a-d6e8-494d-93fa-6f720bf6e582 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.11.0-14-generic N/A
 linux-backports-modules-5.11.0-14-generic N/A
 linux-firmware 1.197
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/13/2021
dmi.bios.release: 1.2
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.7
dmi.board.vendor: Dell Inc.
dmi.chassis.asset.tag: 1132343535
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.2.7:bd01/13/2021:br1.2:svnDellInc.:pnLatitude5520:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5520
dmi.product.sku: 0A21
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Hui Wang (hui.wang)]

Let us disable the "Auto-Mute" first, then redo the test.

Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'