the volume control seem have large gain (0x2e - 0x11)
you have to post the pulseaudio verbose log
did the crackling occur when capture volume is over 0dB ?
post the output of alsa-info.sh
Node 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In
Control: name="Capture Switch", index=0, device=0
Control: name="Capture Volume", index=0, device=0
Device: name="ALC269 Analog", type="Audio", device=0
Amp-In caps: ofs=0x11, nsteps=0x2e, stepsize=0x03, mute=1
Amp-In vals: [0x0e 0x0e]
Converter: stream=2, channel=0
SDI-Select: 0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Connection: 1
0x23
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https://bugs.launchpad.net/bugs/1056795
Title:
Internal mic doesn't work on Dell mini 1010.
Status in “pulseaudio” package in Ubuntu:
New
Bug description:
The internal mic doesn't work at all on cold boot. After reloading
alsa, sound is recorded by with lots of static. Changing Mic Boost or
Capture levels didn't help.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mini 2588 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'MID'/'HDA Intel MID at 0xd83a0000 irq 22'
Mixer name : 'Silicon Image SiI1392 HDMI'
Components : 'HDA:10ec0269,102802c6,00100004
HDA:10951392,ffffffff,00100000'
Controls : 21
Simple ctrls : 9
Date: Wed Sep 26 14:26:16 2012
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386
(20120817.3)
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/27/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0R990K
dmi.board.vendor: Dell Inc.
dmi.board.version: A11
dmi.chassis.asset.tag: **********
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A11
dmi.modalias:
dmi:bvnDellInc.:bvrA11:bd10/27/2009:svnDellInc.:pnInspiron1010:pvrA11:rvnDellInc.:rn0R990K:rvrA11:cvnDellInc.:ct8:cvrA11:
dmi.product.name: Inspiron 1010
dmi.product.version: A11
dmi.sys.vendor: Dell Inc.
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