[X550LA, Realtek ALC233, Mic, Internal] No sound at all

[Isuru Madusanka]

I am unable to use mic in ASUS X550L

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic i686
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: isuru 2753 F.... pulseaudio
 /dev/snd/controlC0: isuru 2753 F.... pulseaudio
CurrentDesktop: GNOME
Date: Wed Nov 26 20:35:51 2014
InstallationDate: Installed on 2014-10-27 (30 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: isuru 2753 F.... pulseaudio
 /dev/snd/pcmC1D0c: isuru 2753 F...m pulseaudio
 /dev/snd/pcmC1D0p: isuru 2753 F...m pulseaudio
 /dev/snd/controlC0: isuru 2753 F.... pulseaudio
Symptom_Jack: Mic, Internal
Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:PCH failed
Symptom_Type: No sound at all
Title: [X550LA, Realtek ALC233, Mic, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/14/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X550LA.508
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X550LA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX550LA.508:bd05/14/2014:svnASUSTeKCOMPUTERINC.:pnX550LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: X550LA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.