Public bug reported:
Title:
[ASUS Vivobook S16 M3607GA] No internal audio: RT721 SoundWire codec has no
ACP70 machine match
Description:
Internal speakers and the 3.5mm headphone jack produce no sound. Only HDMI
outputs exist; PipeWire falls back to "Dummy Output".
Hardware: ASUS Vivobook S16 M3607GA
ACP: [1022:15e2] rev 70, subsystem [1043:3471], driver snd_pci_ps
Codec: Realtek RT721 SDCA on SoundWire (sdw:0:1:025d:0721:01, status
"Attached")
Kernel: 7.0.0-38-generic, Ubuntu 26.04.1 LTS
firmware-sof-signed 2025.12.2-1, linux-firmware 20260319
The SoundWire managers (amd_sdw_manager.0/.1) and amd_ps_sdw_dma probe, and
the RT721 enumerates, but no "amd_sdw" machine platform device is created,
so no ALSA card is registered. snd-soc-acpi-amd-match has only one RT721
entry (acp70_rt721_l1u0_tas2783x2_l1u8b), which expects two TAS2783 amps on
link 1. This laptop has a standalone RT721, so nothing matches.
Expected: a match-table entry for the RT721-only configuration on ACP 7.0,
so snd-acp-sdw-legacy-mach (or the SOF equivalent) creates a sound card.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jevans 5926 F.... wireplumber
/dev/snd/seq: jevans 5905 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 21 19:30:43 2026
InstallationDate: Installed on 2026-10-20 (2 days ago)
InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64
(20260826)
MachineType: ASUS Vivobook S16 M3607GA
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-38-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/12/2025
dmi.bios.release: 5.35
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: M3607GA.302
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: M3607GA
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: 3.3
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrM3607GA.302:bd12/12/2025:br5.35:efr3.3:svnASUS:pnVivobookS16M3607GA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnM3607GA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaVivobookS16:
dmi.product.family: Vivobook S16
dmi.product.name: Vivobook S16 M3607GA
dmi.product.version: 1.0
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2171820
Title:
[ASUS Vivobook S16 M3607GA] No internal audio: RT721 SoundWire codec
has no ACP70 machine match
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