Public bug reported:
The built-in digital microphone is not detected. arecord -l only lists
the ALC257 analog codec; no ACP/DMIC capture device appears. The AMD
ACP6x Audio Coprocessor (06:00.5, rev 60) loads with snd_pci_acp6x, but
no machine driver card is created. Tested on kernels 6.8.0-138 and
7.0.0-38 (Ubuntu 24.04). The model likely needs a DMI quirk in
sound/soc/amd/yc/acp6x-mach.c.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38~24.04.4
ProcVersionSignature: Ubuntu 7.0.0-38.38~24.04.4-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: nabeera 4109 F.... wireplumber
/dev/snd/controlC0: nabeera 4109 F.... wireplumber
/dev/snd/seq: nabeera 4105 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 9 14:18:25 2026
InstallationDate: Installed on 2026-03-07 (216 days ago)
InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64
(20240911)
MachineType: LENOVO 83JC
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=5d937790-de19-4de6-9c89-e836f91d005b 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-7.0.0-38-generic N/A
linux-backports-modules-7.0.0-38-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.29
SourcePackage: linux-hwe-7.0
UpgradeStatus: Upgraded to noble on 2026-03-07 (216 days ago)
dmi.bios.date: 06/02/2025
dmi.bios.release: 1.24
dmi.bios.vendor: LENOVO
dmi.bios.version: PQCN24WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76463 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: LOQ 15ARP9
dmi.ec.firmware.release: 1.24
dmi.modalias:
dmi:bvnLENOVO:bvrPQCN24WW:bd06/02/2025:br1.24:efr1.24:svnLENOVO:pn83JC:pvrLOQ15ARP9:rvnLENOVO:rnLNVNB161216:rvrSDK0T76463WIN:cvnLENOVO:ct10:cvrLOQ15ARP9:skuLENOVO_MT_83JC_BU_idea_FM_LOQ15ARP9:pfaLOQ15ARP9:
dmi.product.family: LOQ 15ARP9
dmi.product.name: 83JC
dmi.product.sku: LENOVO_MT_83JC_BU_idea_FM_LOQ 15ARP9
dmi.product.version: LOQ 15ARP9
dmi.sys.vendor: LENOVO
** Affects: linux-hwe-7.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2170309
Title:
Internal microphone not detected on Lenovo LOQ 15ARP9 (AMD ACP6x)
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