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[Launchpad Bug Tracker <2127117@xxxxxxxxxxxxxxxxxx>]

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Dear Sirs or Madams,

I am writing to tell you about an extremely devastating issue that has
been bothering throughout these couple of weeks.  am reporting an issue
where the internal audio hardware (speakers and headphone jack) is not
detected on my ASUS laptop. The system consistently falls back to a
"Dummy Output" device, and no sound is produced. I had it "fixed" a
couple or times by a cold boot and installing a package with sudo apt
install linux-oem-24.04, but it still returned to "Dummy Output" after a
while.

To provide system info:

Laptop Model: ASUS Zenbook UX425QA

Distribution: Ubuntu 24.04 (or based on it)

Kernel Version Tested: 6.14.0-33-generic (also occurred on
6.14.0-1013-oem)

Hardware Info (from lspci -k):

04:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller
    Kernel driver in use: snd_hda_intel
04:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor
    Kernel driver in use: snd_rn_pci_acp3x
04:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller
    Kernel driver in use: snd_hda_intel

The primary issue seems to be that the snd_hda_intel driver fails to
find the audio codec for the analog output device. The key error message
in dmesg is:

snd_hda_intel 0000:04:00.6: no codecs found!

This is accompanied by a user-space error from WirePlumber, which fails
to initialize the AMD Audio Co-Processor:

wireplumber: SPA handle 'api.alsa.acp.device' could not be loaded; is it installed?
wireplumber: Failed to create 'api.alsa.acp.device' device

I have already taken many steps to resolve the issue, without success:

- Updated the laptop's BIOS/UEFI to the newest version available from the ASUS support website.
- Performed a full system update (apt update && apt upgrade).
- Ensured the latest linux-firmware, sof-firmware, and alsa-ucm-conf packages are installed.
- Tested both the OEM kernel and the newer generic HWE kernel provided by Ubuntu. The issue persists across all versions.
- Removed any custom audio-related kernel boot parameters.

The issue seems to be a driver-level incompatibility with this specific
hardware implementation.

I am happy to provide full dmesg logs, lspci -vvv output, or any other
information required to help diagnose and resolve this bug.

Thank you for your time and work on the Linux kernel.
Sincerely,
Vic (They/She)

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
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
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct  8 21:51:25 2025
InstallationDate: Installed on 2025-09-22 (16 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1)
MachineType: ASUSTeK COMPUTER INC. Zenbook UX425QA_UM425QA
PackageArchitecture: all
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: No upgrade log present (probably fresh install)
dmi.bios.date: 02/18/2025
dmi.bios.release: 5.19
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: UX425QA.311
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX425QA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No  Asset  Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 3.11
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrUX425QA.311:bd02/18/2025:br5.19:efr3.11:svnASUSTeKCOMPUTERINC.:pnZenbookUX425QA_UM425QA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX425QA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: Zenbook
dmi.product.name: Zenbook UX425QA_UM425QA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
modified.conffile..etc.modprobe.d.alsa-base.conf:
 options snd-hda-intel single_cmd=1
 options snd-hda-intel probe_mask=1
 options snd-hda-intel model=basic
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2025-10-08T19:55:35.173860

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble wayland-session
-- 
[Asus Zenbook UX425QA_UM425QA] No codecs found for the internal sound card, resulting in a 'Dummy Output' device.
https://bugs.launchpad.net/bugs/2127117
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