Public bug reported:

all audio files won't run in Rhythmbox or Audacity.Also none of the video files 
will run in Firefox
(youtube or any other videos found in firefox). This has happened when I 
upgraded the kernal to 6.14.
I was running kernal 6.2 because the upgraded kernals wouldn't work with hdmi 
through display ports.
Recently I found that the audio support for hdmi had been upgraded and was 
working correctly, so I decided to go ahead and upgrade to the latest kernal 
(6.14) and found the bug waiting for me. If I set the kernal back to 6.2 the 
audio and video bug is gone. Retrying kernal 6.14 the bug returns.

I am running ubuntu lts 24.04

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-33-generic 6.14.0-33.33~24.04.1
ProcVersionSignature: Ubuntu 6.14.0-33.33~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-33-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  stan       2856 F.... wireplumber
 /dev/snd/controlC0:  stan       2856 F.... wireplumber
 /dev/snd/seq:        stan       2852 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct  2 01:41:35 2025
InstallationDate: Installed on 2025-06-15 (109 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 
(20240827.1)
MachineType: Dell Inc. OptiPlex 7020
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-33-generic 
root=UUID=e1d670e9-a30b-436a-8f69-7fa9bebd99db ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-6.14.0-33-generic N/A
 linux-backports-modules-6.14.0-33-generic  N/A
 linux-firmware                             20240318.git3b128b60-0ubuntu2.17
SourcePackage: linux-hwe-6.14
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/26/2017
dmi.bios.release: 65.13
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A13
dmi.board.name: 02YYK5
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA13:bd06/26/2017:br65.13:svnDellInc.:pnOptiPlex7020:pvr00:rvnDellInc.:rn02YYK5:rvrA01:cvnDellInc.:ct15:cvr:sku05A5:
dmi.product.name: OptiPlex 7020
dmi.product.sku: 05A5
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.

** Affects: linux-hwe-6.14 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble wayland-session

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https://bugs.launchpad.net/bugs/2126633

Title:
  all audio and video files don't run

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