[HP EliteBook 820 G3, Conexant CX20724, Speaker, Internal] Underruns, dropouts or crackling sound

[Krrish Dhaneja]

# Description about OS and package →
Description: Ubuntu 20.04.2 LTS
Release: 20.04
alsa-utils:
  Installed: 1.2.2-1ubuntu2.1
  Candidate: 1.2.2-1ubuntu2.1

# What expected →
Sound which plays after inserting a USB drive/any other sound made by OS while using a VM will play normally.

# What happened →
Actually whenever I plug my USB drive while running a VM, there is a sound of crackling/scratching when the USB drive is plugged-in and this also happens when the VM makes a sound of login or anything else, and also that the strange distortion only comes at the end of a sound. What could be the possible reason for this?

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.8.0-54.61~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-54-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.17
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: krrish 2259 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu May 20 16:14:23 2021
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulseAudioLog:
 May 20 16:00:46 720G3 dbus-daemon[1280]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.27' (uid=125 pid=1488 comm="/usr/bin/pulseaudio --daemonize=no --log-target=jo" label="unconfined")
 May 20 16:01:11 720G3 systemd[1482]: pulseaudio.service: Succeeded.
 May 20 16:01:21 720G3 systemd[1482]: pulseaudio.socket: Succeeded.
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [HP EliteBook 820 G3, Conexant CX20724, Speaker, Internal] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/01/2016
dmi.bios.release: 1.13
dmi.bios.vendor: HP
dmi.bios.version: N75 Ver. 01.13
dmi.board.name: 807C
dmi.board.vendor: HP
dmi.board.version: KBC Version 85.74
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 133.116
dmi.modalias: dmi:bvnHP:bvrN75Ver.01.13:bd11/01/2016:br1.13:efr133.116:svnHP:pnHPEliteBook820G3:pvr:rvnHP:rn807C:rvrKBCVersion85.74:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook 820 G3
dmi.product.sku: X4A65UC#ACJ
dmi.sys.vendor: HP