Public bug reported:
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Dell XPS M1330
SigmaTel STAC9228
Internal Microphone
Problem: The capture volume is so low on the internal microphone (not the jack)
that I can barely hear it even with full boost and speaker volume all the way
up. Additionally, the capture has some distortion. If I tap on the microphone
I can hear the taps, so I know that the capture is working; however, it is not
functioning in a manner that allows it to be usable.
Everything else works great, including audio output (I can hear music and sound
from videos just fine).
Additionally, when I boot into windows vista, the microphone works perfectly,
so it's not a hardware issue.
I have scoured the forums trying to find a fix, including trying all the
different models in alsa-base.conf listed for the STAC9228 and trying
all sorts of configurations via alsamixer and pavucontrol including
silencing the left/right channel while leaving the other at full volume.
I have even tried alternate configurations via hdajackretask. I have
now spent several hours on this problem, and it is beginning to become
frustrating. Thanks for any help you can give.
jay
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic i686
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jay 1917 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Aug 13 09:54:25 2014
InstallationDate: Installed on 2014-08-02 (10 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:Intel failed
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Mic, Internal
Symptom_Type: High background noise, or volume is too low
Title: [XPS M1330, SigmaTel STAC9228, Mic, Internal] Background noise or low
volume
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/26/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-08-13T09:42:42.548525
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 trusty
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https://bugs.launchpad.net/bugs/1356393
Title:
[XPS M1330, SigmaTel STAC9228, Mic, Internal] volume too low and
distorted even with boost
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