[Inspiron 3501, Cirrus Logic CS8409/CS42L42, Speaker, Internal] Underruns, dropouts or crackling sound

[Vladimir Edwin Alaro]

I have a dell inspiron 15 3000 with audio problems, bluetooth is working fine, hdmi speaker is working fine but internal speaker sounds bad. The sound kind of crackles.

Information

Description: Ubuntu 20.04.3 LTS
Release: 20.04

pulseaudio:
  Installed: 1:13.99.1-1ubuntu3.13
  Candidate: 1:13.99.1-1ubuntu3.13
  Version table:
 *** 1:13.99.1-1ubuntu3.13 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:13.99.1-1ubuntu3.8 500
        500 http://archive.ubuntu.com/ubuntu focal-security/main amd64 Packages
     1:13.99.1-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio 1:13.99.1-1ubuntu3.13
ProcVersionSignature: Ubuntu 5.11.0-43.47~20.04.2-generic 5.11.22
Uname: Linux 5.11.0-43-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 25 00:30:18 2021
InstallationDate: Installed on 2021-12-09 (15 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulseAudioLog:
 dic 24 23:12:16 valaro dbus-daemon[909]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.29' (uid=125 pid=2170 comm="/usr/bin/pulseaudio --daemonize=no --log-target=jo" label="unconfined")
 dic 24 23:13:22 valaro pulseaudio[2170]: After module unload, module 'module-null-sink' was still loaded!
 dic 24 23:13:22 valaro systemd[2152]: pulseaudio.service: Succeeded.
 dic 24 23:13:32 valaro systemd[2152]: pulseaudio.socket: Succeeded.
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [Inspiron 3501, Cirrus Logic CS8409/CS42L42, Speaker, Internal] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/05/2021
dmi.bios.release: 1.7
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.7.1
dmi.board.name: 03TNDR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.7.1:bd07/05/2021:br1.7:svnDellInc.:pnInspiron3501:pvr:sku0A25:rvnDellInc.:rn03TNDR:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 3501
dmi.product.sku: 0A25
dmi.sys.vendor: Dell Inc.
modified.conffile..etc.pulse.daemon.conf: [modified]
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.daemon.conf: 2021-12-24T21:32:37.421378
mtime.conffile..etc.pulse.default.pa: 2021-12-24T22:17:32.506068