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[nour <nourbteddini@xxxxxxxxx>]

hi Raymond,

Thanks for pointing all this, but I need your help here:

through you raised points I reached a summary that says , the Codec I
have has loopback true

http://orion.lcg.ufrj.br/roma/ALSA.html

http://orion.lcg.ufrj.br/roma/scripts/codecs.txt

from the above link, I realized that my Codec

 cat /proc/asound/Intel/codec#* 
Codec: SigmaTel STAC9271D
Address: 2
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x83847627
Subsystem Id: 0x80863001
Revision Id: 0x100201

Codec STAC9271D

9271(D)/2(D)/3(D)/4(D) 	has:
 #DACs = 5
#ADCs = 3
Analog loopback 	yes 
Maximum sampling rate 	 192000

1 more thing according to Alsa modules 
https://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt

STAC9227/9228/9229/927x
=======================
  ref		Reference board
  ref-no-jd	Reference board without HP/Mic jack detection
  3stack	D965 3stack
  5stack	D965 5stack + SPDIF
  5stack-no-fp	D965 5stack without front panel
  dell-3stack	Dell Dimension E520
  dell-bios	Fixes with Dell BIOS setup
  dell-bios-amic Fixes with Dell BIOS setup including analog mic
  volknob	Fixes with volume-knob widget 0x24
  auto		BIOS setup (default)


5stack is allocated to motherboards D965 right?
my motherboard is DP35DP

is this affecting in sound recognition?
what shall I do here?

I didnt get your summary at the end , in your last comment.

What should e done If PCM stream is muted due to loopback enable set to true 
as per 

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa
/HD-Audio-Controls.txt

IDT/Sigmatel codecs
-------------------

* Analog Loopback
  This control enables/disables the analog-loopback circuit.  This
  appears only when "loopback" is set to true in a codec hint
  (see HD-Audio.txt).  Note that on some codecs the analog-loopback
  and the normal PCM playback are exclusive, i.e. when this is on, you
  won't hear any PCM stream.

Thanks

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1540372

Title:
  [Intel DP35DP, SigmaTel STAC9271D, Green Speaker, Rear] Underruns,
  dropouts or crackling sound

Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  I cant record or play on my sound card ubuntu 14.04.1

  Alsa is detecting the sound card
  **** List of PLAYBACK Hardware Devices ****
  card 0: Intel [HDA Intel], device 0: STAC9271D Analog [STAC9271D Analog]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: Intel [HDA Intel], device 1: STAC9271D Digital [STAC9271D Digital]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

  
  but PulseAudio is not detecting the card 

  attached the log file

  Thank you

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
  Uname: Linux 3.19.0-47-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tuned      1851 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Feb  1 15:09:35 2016
  InstallationDate: Installed on 2015-10-26 (98 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
  Symptom_Card: Built-in Audio - HDA Intel
  Symptom_Jack: Green Speaker, Rear
  Symptom_Type: Underruns, dropouts, or "crackling" sound
  Title: [, SigmaTel STAC9271D, Green Speaker, Rear] Underruns, dropouts or crackling sound
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/02/2007
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: DPP3510J.86A.0293.2007.1002.1519
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: DP35DP
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAD81073-207
  dmi.chassis.type: 2
  dmi.modalias: dmi:bvnIntelCorp.:bvrDPP3510J.86A.0293.2007.1002.1519:bd10/02/2007:svn:pn:pvr:rvnIntelCorporation:rnDP35DP:rvrAAD81073-207:cvn:ct2:cvr:
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2016-01-29T17:09:52.179523

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