Public bug reported:
I cannot record any sound with internal microphone.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bagustris 1799 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Feb 21 15:35:35 2017
InstallationDate: Installed on 2017-01-09 (42 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_Type: None of the above
Title: [MacBookPro9,2, Cirrus Logic CS4206, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/20/2016
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP91.88Z.00D3.B0E.1610201614
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-6F01561E16C75D06
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro9,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-6F01561E16C75D06
dmi.modalias:
dmi:bvnAppleInc.:bvrMBP91.88Z.00D3.B0E.1610201614:bd10/20/2016:svnAppleInc.:pnMacBookPro9,2:pvr1.0:rvnAppleInc.:rnMac-6F01561E16C75D06:rvrMacBookPro9,2:cvnAppleInc.:ct10:cvrMac-6F01561E16C75D06:
dmi.product.name: MacBookPro9,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2017-02-21T14:46:25.281945
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1666443
Title:
[MacBookPro9,2, Cirrus Logic CS4206, Mic, Internal] Recording problem
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