[Bug 2092363] Re: Missing (but referenced) SOF firmware in pc-kernel – No Audio

[Jürg Häfliger]

> Thus it should be as straight forward to have access to the proper
firmware.

It is actually not, not in a snap environment. As you mentioned FDE is
experimental so things are expected to not work 100%. The problem with
firmware is that there is so many and every piece of HW wants something
different. Currently we have no way of installing additional firmware
for a snap based kernel so you only have what comes with the snap. There
are plans for firmware component snaps to solve that issue but atm
they're just that, plans. The alternative would be to keep adding
firmware to the kernel snap but that is playing whack-a-mole and blows
up the snap. Which then gets people excited for a different reason.

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Title:
  Missing (but referenced) SOF firmware in pc-kernel – No Audio

Status in canonical-kernel-snaps:
  Confirmed
Status in pc-kernel-snap:
  Invalid
Status in apt package in Ubuntu:
  Invalid
Status in boot-managed-by-snapd package in Ubuntu:
  Invalid
Status in firmware-sof package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Invalid

Bug description:
  I am encountering an issue with the pc-kernel snap on my HP EliteBook
  840 G11 laptop running Ubuntu 24.04.1 LTS with the new TPM+FDE
  feature. Despite testing multiple kernel channels, the system fails to
  detect any audio devices. However, when booting into a live session of
  Ubuntu 24.04.1 LTS, audio functions as expected. This suggests the
  issue may be related to the pc-kernel snap.

  Right now I'm on channel 24/stable (version: 6.8.0-50.51), but I have
  tried 24-hwe/stable and 24.10/stable as well.

  For reference, I have first tried to seek help in the support section over at Ubuntu Discourse, and I was encouraged to file a bug report here against the linux package on Discourse:
  https://discourse.ubuntu.com/t/no-audio-device-detected-on-hp-elitebook-840-14-g11-running-ubuntu-24-04/51498/7

  Details:

  OS: Ubuntu 24.04.1 LTS
  Setup: TPM-backed Full Disk Encryption (FDE) using pc-kernel snap
  Kernel Channels Tried: 24-hwe/stable, 24/stable, 24.10/stable
  Issue: aplay -l reports "no sound card found"; only "Dummy output" is listed in Audio settings.
  Observation: Audio works correctly in a live session of Ubuntu 24.04.1 LTS.

  Listing audio devices:

  $ aplay -l
  aplay: device_list:277: no soundcards found...

  Relevant lspci Output:

  00:1f.3 Multimedia audio controller [0401]: Intel Corporation Meteor Lake-P HD Audio Controller [8086:7e28] (rev 20)
  Subsystem: Hewlett-Packard Company Meteor Lake-P HD Audio Controller [103c:8c26]
  Kernel driver in use: sof-audio-pci-intel-mtl
  Kernel modules: snd_hda_intel, snd_sof_pci_intel_mtl

  Additional Notes:

  Could the issue be related to missing kernel drivers or modules, such as firmware-sof-signed?
  Reference: https://packages.ubuntu.com/noble/firmware-sof-signed

  Please let me know if additional details, logs, or steps are required.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: linux-image-6.8.0-50-generic (not installed)
  ProcVersionSignature: Ubuntu 6.8.0-50.51-generic 6.8.12
  Uname: Linux 6.8.0-50-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/seq:        kihen      3216 F.... pipewire
  CRDA: N/A
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Dec 22 20:09:17 2024
  MachineType: HP HP EliteBook 840 14 inch G11 Notebook PC
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  ProcFB:
   0 simpledrmdrmfb
   1 i915drmfb
  ProcKernelCmdLine: snapd_recovery_mode=run console=ttyS0,115200n8 console=tty1 panic=-1 quiet splash
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-6.8.0-50-generic N/A
   linux-backports-modules-6.8.0-50-generic  N/A
   linux-firmware                            N/A
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:
   
  dmi.bios.date: 06/20/2024
  dmi.bios.release: 2.6
  dmi.bios.vendor: HP
  dmi.bios.version: W70 Ver. 01.02.06
  dmi.board.name: 8C26
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 02.43.50
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.ec.firmware.release: 2.67
  dmi.modalias: dmi:bvnHP:bvrW70Ver.01.02.06:bd06/20/2024:br2.6:efr2.67:svnHP:pnHPEliteBook84014inchG11NotebookPC:pvrSBKPF:rvnHP:rn8C26:rvrKBCVersion02.43.50:cvnHP:ct10:cvr:sku8M4W7AV:
  dmi.product.family: 103C_5336AN HP EliteBook
  dmi.product.name: HP EliteBook 840 14 inch G11 Notebook PC
  dmi.product.sku: 8M4W7AV
  dmi.product.version: SBKPF
  dmi.sys.vendor: HP

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