@Isa Mammadli (fineman): I had to try several things in order to make
the loudspeakers work even after the bugfix. I am not sure to remember
everything.

1) sound device for output is "ACP/ACP3X/ACP6x Audio Coprocessor
Stereo", with connector "Speakers" (not "Headphones").

2) this would work, but with a volume ridiculously weak, even at max.
I could fix it by launching a program named "QasHCtl" (executable: "qashctl"), 
and set the parameter "Mixer / Headphone Playback Volume" to 3 (the value is an 
integer from 0 to 3). Why "headphone" since the output is "speakers", I have no 
idea, but this is the only parameter that works.

I can do the same setting with this command:
amixer -c 1 set Headphone 3

3) this is only temporary. In order to make it definitive, I created a
task (in systemd) that will run, after each boot-up, a file with
executable rights and with the following content:

#!/bin/bash
exec amixer -c 1 set Headphone 3

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.8 in Ubuntu.
https://bugs.launchpad.net/bugs/2073049

Title:
  No sound on Huawei Matebook D14  AMD since Linux 6.8.0-38 [regression]

Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-6.8 package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  Fix Released
Status in linux-oem-6.8 source package in Noble:
  Fix Released

Bug description:
  This laptop has had non-functioning internal sound (based on AMD
  Renoir) until Ubuntu 24.04, which made it work thanks to a bugfix in
  the kernel.

  Unfortunately, the sound is completely broken with kernel from package
  "linux-image-6.8.0-38-generic" (6.8.0-38.38): the internal speakers
  are not even listed in the sound GUI (I am using "mate-volume-
  control", with Ubuntu-Mate.

  When I boot the laptop on Linux 6.8.0-36-generic, the speakers are
  listed and the sound works normally.

  This might be related to this bug in Linux kernel:
  https://bugzilla.kernel.org/show_bug.cgi?id=218959

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: linux-image-6.8.0-38-generic 6.8.0-38.38
  ProcVersionSignature: Ubuntu 6.8.0-38.38-generic 6.8.8
  Uname: Linux 6.8.0-38-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/seq:        julier     2643 F.... pipewire
   /dev/snd/pcmC0D3p:   julier     2643 F...m pipewire
   /dev/snd/controlC0:  julier     2645 F.... wireplumber
  CRDA: N/A
  CasperMD5CheckResult: pass
  CurrentDesktop: MATE
  Date: Sun Jul 14 11:03:18 2024
  InstallationDate: Installed on 2022-04-18 (818 days ago)
  InstallationMedia: Ubuntu-MATE 22.04 LTS "Jammy Jellyfish" - Daily amd64 
(20220418)
  MachineType: HUAWEI HVY-WXX9
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-38-generic 
root=UUID=e5259488-061f-48f2-b6ca-9ebd58053ca3 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-6.8.0-38-generic N/A
   linux-backports-modules-6.8.0-38-generic  N/A
   linux-firmware                            20240318.git3b128b60-0ubuntu2.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to noble on 2024-04-28 (76 days ago)
  dmi.bios.date: 03/17/2023
  dmi.bios.release: 2.17
  dmi.bios.vendor: HUAWEI
  dmi.bios.version: 2.17
  dmi.board.asset.tag: N/A
  dmi.board.name: HVY-WXX9-PCB-B1
  dmi.board.vendor: HUAWEI
  dmi.board.version: M1010
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: HUAWEI
  dmi.chassis.version: M1010
  dmi.ec.firmware.release: 2.17
  dmi.modalias: 
dmi:bvnHUAWEI:bvr2.17:bd03/17/2023:br2.17:efr2.17:svnHUAWEI:pnHVY-WXX9:pvrM1010:rvnHUAWEI:rnHVY-WXX9-PCB-B1:rvrM1010:cvnHUAWEI:ct10:cvrM1010:skuC100:
  dmi.product.family: MateBook D
  dmi.product.name: HVY-WXX9
  dmi.product.sku: C100
  dmi.product.version: M1010
  dmi.sys.vendor: HUAWEI

  
  [Impact]
  Huawei MateBook D14 AMD got no sound after commit:
  4af565de9f8c ("ASoC: amd: acp: fix for acp pdm configuration check")
  which is introduced in v6.8.5 stable updates.

  [Fix]
  Invokes platform specific acp pin configuration check functions.
  Upstream fix:
  09068d624c490 ("ASoC: amd: acp: fix for acp platform device creation failure")

  [Test]
  Bug reporter tested on hardware, sound output OK.
  Also verified on ThinkPad T14 AMD, sound output OK too.

  [Where problems could occur]
  It may break sound output of AMD platforms.

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