When I connect my headphones with built-in microphone using single mini-jack port sound is ok, but microphone doesn't work.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: alsa-base 1.0.25+dfsg-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-23.35-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: necrordian 2249 F.... pulseaudio
Date: Sun Feb 17 17:23:24 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-02-09 (8 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=pl_PL.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed
Symptom_Card: Wbudowany dźwięk - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_Type: Only some of inputs are working
Title: [AO756, Realtek ALC271X, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/19/2012
dmi.bios.vendor: Acer
dmi.bios.version: V1.05
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Mimic
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.05
dmi.modalias: dmi:bvnAcer:bvrV1.05:bd07/19/2012:svnAcer:pnAO756:pvrV1.05:rvnAcer:rnMimic:rvrType2-BoardVersion:cvnAcer:ct10:cvrV1.05:
dmi.product.name: AO756
dmi.product.version: V1.05
dmi.sys.vendor: Acer
Confirmed on a similar system. Acer Timeline U M5 481TG. This is likely upstream with alsa
Distribution: Arch AMD 64bit1
Kernel: 3.9.7-1-ARCH
CPU: Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz
Ram 10gb DDR3
Intel HDA PCH codec ALC271x
Symptom: Combo jack does not recognize microphone only headset when plugged in.
Let me know if there is any info that could help .