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[Bug 1393576] Re: internal mic is extreamly quiet

 

!Sysfs Files
!!-----------

/sys/class/sound/hwC0D0/init_pin_configs:
0x0a 0x0321101f
0x0b 0x03811020
0x0c 0x40f000f0
0x0d 0x90170110
0x0e 0x40f000f1
0x0f 0x40f000f2
0x14 0x40f000f3
0x16 0x40f000f4
0x17 0x90a60030
0x18 0x40f000f5
0x21 0x40f000f6
0x22 0x40f000f7

/sys/class/sound/hwC0D0/driver_pin_configs:
0x0a 0x0321101f
0x0b 0x03a11020
0x0c 0x400003fa
0x0d 0x90170310
0x0e 0x400003fb
0x0f 0x400003fc
0x14 0x400003fd
0x16 0x40f000f9
0x17 0x90a60330
0x18 0x400003ff
0x21 0x0144131f
0x22 0x40c003fe


this meam that some pins are fixed by the driver 

you have to find out which patch fix the pins


https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/pci/hda/patch_sigmatel.c?qt=grep&q=stac9205

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https://bugs.launchpad.net/bugs/1393576

Title:
  internal mic is extreamly quiet

Status in “alsa-driver” package in Ubuntu:
  New

Bug description:
  Hello,

  The internal mic of my Dell Vostro 1500 is extreamly quiet. It does work but one need to shout to get anything recorded. I've been trying to use all the STAC9025 models
  STAC9205/9254
  =============
    ref		Reference board
    dell-m42	Dell (unknown)
    dell-m43	Dell Precision
    dell-m44	Dell Inspiron
    eapd		Keep EAPD on (e.g. Gateway T1616)
    auto		BIOS setup (default)

  in /etc/modprobe.d/alsa-base.conf, but non of these changed the signal
  level.

  I was also playing with alsamixer and various settings including
  muting left/right channel as suggested in some other page without any
  effect.

  The mic works good in vista.

  Debug information:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1393576/+attachment/4263142/+files/debuginfo.txt

  ---
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D1', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=4ad31b6d-9421-44c6-8fa9-1c51f8e868c3
  MachineType: Dell Inc. Vostro 1500
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=4fb34b1f-a7fe-4664-a794-eece38edeb6c ro splash quiet
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-generic N/A
   linux-backports-modules-3.16.0-24-generic  N/A
   linux-firmware                             1.138
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  Tags:  utopic
  Uname: Linux 3.16.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  _MarkForUpload: True
  dmi.bios.date: 04/21/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A06
  dmi.board.name: 0WY040
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA06:bd04/21/2008:svnDellInc.:pnVostro1500:pvr:rvnDellInc.:rn0WY040:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Vostro 1500
  dmi.sys.vendor: Dell Inc.

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