Public bug reported:

Synce i upgraded to from 11.10 to 12.04 my external microphone (headset)
has stopped working. It works fine in other S.O. but not in 12.04.

I have no idea why is this happening but I found MANY peopleo having
similar problems.

Thanks in advance and holp you can fix this in a short cause it leads to
many problems when try to work on ubuntu!

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  sidney     2548 F.... pulseaudio
 /dev/snd/controlC0:  sidney     2548 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2500000 irq 48'
   Mixer name   : 'Realtek ALC272'
   Components   : 'HDA:10ec0272,1179ff7c,00100001'
   Controls      : 31
   Simple ctrls  : 17
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xf2f30000 irq 49'
   Mixer name   : 'ATI R6xx HDMI'
   Components   : 'HDA:1002aa01,00aa0100,00100000'
   Controls      : 6
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Tue May  8 00:07:54 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:Intel failed
Symptom_Card: Áudio embutido - HDA Intel
Symptom_DevicesInUse:
 2548  2548/dev/snd/controlC1:  sidney    F.... pulseaudio
 /dev/snd/controlC0:  sidney    F.... pulseaudio
Symptom_Jack: Black Mic, Front
Symptom_Type: No sound at all
Title: [Satellite A355, Realtek ALC272, Black Mic, Front] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/26/2008
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.70
dmi.board.name: KTKAA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnTOSHIBA:bvrV1.70:bd12/26/2008:svnTOSHIBA:pnSatelliteA355:pvrPSAL6U-03T01E:rvnTOSHIBA:rnKTKAA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite A355
dmi.product.version: PSAL6U-03T01E
dmi.sys.vendor: TOSHIBA

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise

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https://bugs.launchpad.net/bugs/996305

Title:
  [Satellite A355, Realtek ALC272, Black Mic, Front] No sound at all

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