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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.

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


** Tags: apport-collected kernel-bug-exists-upstream 
kernel-bug-exists-upstream-3.18-rc5 kernel-sound latest-bios-a06 utopic
-- 
internal mic is extreamly quiet
https://bugs.launchpad.net/bugs/1393576
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