Public bug reported:
This bug is related to https://bugs.launchpad.net/ubuntu/+source/alsa-
driver/+bug/1245020 with fresh install of Ubuntu 14.04. The previous
workaround does not work. The input tab of Sound Settings has two inputs
(1) Analog Input - built-in audio and (2) Internal microphone -built-in
audio. Neither of them work.
using alsamixer to toggle the input source back and forth from Internal
Microphone to something else (mic or mic 1) and back to Internal
microphone temporarily works. However this fix is not permanent. The
internal microphone stops working after a while or after a restart.
Thanks
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jul 1 08:56:59 2014
InstallationDate: Installed on 2014-06-15 (15 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:SB failed
Symptom_Card: Built-in Audio - HDA ATI SB
Symptom_Jack: Mic, Internal
Symptom_Type: Only some of inputs are working
Title: [AO722, Conexant CX20588, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/25/2012
dmi.bios.vendor: Acer
dmi.bios.version: V1.11
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE10-BZ
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.11
dmi.modalias:
dmi:bvnAcer:bvrV1.11:bd09/25/2012:svnAcer:pnAO722:pvrV1.11:rvnAcer:rnJE10-BZ:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.11:
dmi.product.name: AO722
dmi.product.version: V1.11
dmi.sys.vendor: Acer
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1336257
Title:
[AO722, Conexant CX20588, Mic, Internal] Internal microphone doesn't
work
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