Public bug reported:
Version: Ubuntu 20.04.01
My Tongfang PF5NU1G's internal microphone used to work on an older
kernel version (5.4) but since I've upgraded the kernel to 5.8+ due to
better support for AMD Renoir (Ryzen 7 4800H + Radeon Vega 8 graphics),
the internal mic stopped working.
I have also tried to use kernel version 5.6, but has the same problem.
The mic is selected in the settings menu as: Digital Microphone-Family
17h(Models 10h-1fh) HD Audio Controller
When i record audio with the default input source selected in Audacity,
it records a small static-like sound. The microphone does not detect any
input it seems.
Thanks in advance!
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
Uname: Linux 5.8.14-050814-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read
kernel buffer failed: Operation not permitted
Date: Thu Oct 8 16:04:19 2020
InstallationDate: Installed on 2020-10-08 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:Generic_1 failed
Symptom_Card: Family 17h (Models 10h-1fh) HD Audio Controller - HD-Audio Generic
Symptom_Jack: Mic, Internal
Symptom_Type: None of the above
Title: [Standard, Realtek ALC269VC, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/17/2020
dmi.bios.release: 5.16
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N.1.06PCS00
dmi.board.asset.tag: Standard
dmi.board.name: PF5NU1G
dmi.board.vendor: TongFang
dmi.board.version: Standard
dmi.chassis.asset.tag: Standard
dmi.chassis.type: 10
dmi.chassis.vendor: Standard
dmi.chassis.version: Standard
dmi.ec.firmware.release: 1.1
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrN.1.06PCS00:bd06/17/2020:br5.16:efr1.1:svnStandard:pnStandard:pvrStandard:rvnTongFang:rnPF5NU1G:rvrStandard:cvnStandard:ct10:cvrStandard:
dmi.product.family: RENOIR
dmi.product.name: Standard
dmi.product.sku: 0001
dmi.product.version: Standard
dmi.sys.vendor: Standard
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1899049
Title:
Internal microphone not detected
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