Public bug reported:

Internal microphone stopped working on the latest 3.0.0-15.
Still works on previous kernel:

$ uname -a
Linux ayumi-note 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 
x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-14-generic 3.0.0-14.23
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ayumi      1473 F.... lxpanel
CRDA: Error: [Errno 2] Нет такого файла или каталога
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf7c00000 irq 44'
   Mixer name   : 'Intel CougarPoint HDMI'
   Components   : 'HDA:10ec0269,144dc604,00100100 
HDA:80862805,80860101,00100000'
   Controls      : 19
   Simple ctrls  : 11
Date: Wed Feb  8 01:34:46 2012
HibernationDevice: RESUME=UUID=97d1b26e-55e0-48d4-89e9-22b2e794cee2
InstallationMedia: Lubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 350U2A/350U2B/300U1A/351U2A/351U2B
ProcEnviron:
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic 
root=UUID=c7a06f49-29ee-4ad3-8bc6-e60018714d11 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.0.0-14-generic N/A
 linux-backports-modules-3.0.0-14-generic  N/A
 linux-firmware                            1.60
RfKill: Error: [Errno 2] Нет такого файла или каталога
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/09/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 03PY.M019.20110709.WZW
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: 350U2A/350U2B/300U1A/351U2A/351U2B
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: 03PY
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr03PY.M019.20110709.WZW:bd07/09/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn350U2A/350U2B/300U1A/351U2A/351U2B:pvr03PY:rvnSAMSUNGELECTRONICSCO.,LTD.:rn350U2A/350U2B/300U1A/351U2A/351U2B:rvr03PY:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: 350U2A/350U2B/300U1A/351U2A/351U2B
dmi.product.version: 03PY
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric staging

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https://bugs.launchpad.net/bugs/928494

Title:
  [Oneiric] Internal microphone stopped working on the latest 3.0.0-15

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