Public bug reported:

I've installed Kubuntu 20.04 and I have crackling/popping sound. I tried
to change needed files for pulseaudio and alsa (disabling power save),
reboot the system and I still have problem.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  kizule     1937 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed May 13 20:47:03 2020
InstallationDate: Installed on 2020-05-13 (0 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/10/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68MVU Ver. F.06
dmi.board.name: 30D5
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 82.15
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68MVUVer.F.06:bd12/10/2007:svnHewlett-Packard:pn:pvrF.06:rvnHewlett-Packard:rn30D5:rvrKBCVersion82.15:cvnHewlett-Packard:ct10:cvr:
dmi.product.family: 103C_5336AN
dmi.product.version: F.06
dmi.sys.vendor: Hewlett-Packard
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-05-13T20:24:18.764608

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

** Description changed:

  I've installed Kubuntu 20.04 and I have crackling/popping sound. I tried
  to change needed files for pulseaudio and alsa (disabling power save),
  reboot the system and I still have problem.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
  Uname: Linux 5.4.0-29-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  kizule     1937 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  kizule     1937 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Wed May 13 20:47:03 2020
  InstallationDate: Installed on 2020-05-13 (0 days ago)
  InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
- Title: Bluetooth sound card not detected
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/10/2007
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68MVU Ver. F.06
  dmi.board.name: 30D5
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 82.15
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68MVUVer.F.06:bd12/10/2007:svnHewlett-Packard:pn:pvrF.06:rvnHewlett-Packard:rn30D5:rvrKBCVersion82.15:cvnHewlett-Packard:ct10:cvr:
  dmi.product.family: 103C_5336AN
  dmi.product.version: F.06
  dmi.sys.vendor: Hewlett-Packard
  mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-05-13T20:24:18.764608

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https://bugs.launchpad.net/bugs/1878468

Title:
  Crackling sound

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