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[David Fister <2121553@xxxxxxxxxxxxxxxxxx>]

I have confirmed that the audio works perfectly when I boot into an
older kernel, version 6.11.0-29-generic. The problem only occurs on the
newer kernel that came with the 25.04 installation. This is a kernel
regression.

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https://bugs.launchpad.net/bugs/2121553

Title:
  Sound profile is empty - Dummy Output

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  On my Dell Precision 5520, only a Dummy Output is available. The
  built-in speakers and headphone jack are not detected.  Hardware works
  with Windows, but not with Ubuntu.  Alsa report is at http://alsa-
  project.org/db/?f=a47dba64b4274fcbf189e1caf57d9d9dbb4e4f2e.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu8
  ProcVersionSignature: Ubuntu 6.14.0-29.29-generic 6.14.8
  Uname: Linux 6.14.0-29-generic x86_64
  ApportVersion: 2.32.0-0ubuntu5.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/seq:        david      2599 F.... pipewire
  CasperMD5CheckResult: pass
  CurrentDesktop: X-Cinnamon
  Date: Wed Aug 27 12:20:14 2025
  InstallationDate: Installed on 2025-04-15 (134 days ago)
  InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
  MachineType: Dell Inc. Precision 5520
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  SourcePackage: alsa-driver
  Symptom: audio
  UpgradeStatus: Upgraded to plucky on 2025-08-27 (1 days ago)
  dmi.bios.date: 07/04/2024
  dmi.bios.release: 1.39
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.39.0
  dmi.board.name: 0R6JFH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.asset.tag: 17000592
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.39.0:bd07/04/2024:br1.39:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn0R6JFH:rvrA00:cvnDellInc.:ct10:cvr:sku07BF:
  dmi.product.family: Precision
  dmi.product.name: Precision 5520
  dmi.product.sku: 07BF
  dmi.sys.vendor: Dell Inc.
  mtime.conffile..etc.modprobe.d.alsa-base.conf: 2025-08-27T00:41:56.958641

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