Done. Now checking with hdmi sound card disabled. Would this be a
potential workaround if it succeeds? I do not have built-in speakers on
my monitor.

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1881432

Title:
  System hangs after pulseaudio error: "snd_pcm_avail() returned a value
  that is exceptionally large: 125388 bytes (710 ms)"

Status in pulseaudio package in Ubuntu:
  Confirmed

Bug description:
  This is a bug on Ubuntu 20.04 (Focal Fossa) for pulseaudio version:
  1:13.99.1-1ubuntu3.2.

  Description:

  At random intervals, pulseaudio gives the following error message:
  "snd_pcm_avail() returned a value that is exceptionally large: 125388
  bytes (710 ms)," after which the system slows down to a crawl. It has
  occurred in two instances: while playing a video game, and while
  working in two different workspaces with a zoom client and Spotify
  open (though not actively playing any audio). The system is
  recoverable with the SysRq key. I have not been able to duplicate it
  on command, but it is recurrent.

  Possible duplicates:

  https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1750947. The
  patch committed to fix this bug was reverted to fix a subsequent bug,
  https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1767784.

  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-04-01 (59 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  NonfreeKernelModules: wl
  Package: pulseaudio 1:13.99.1-1ubuntu3.2
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
  Tags:  focal
  Uname: Linux 5.4.0-33-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/14/2019
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P3.70
  dmi.board.name: B450M-HDV R4.0
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP3.70:bd11/14/2019:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB450M-HDVR4.0:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: To Be Filled By O.E.M.
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.sku: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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