[43192RU, Conexant CX20585, Mic, Internal] Crackling sound

[Elijah Lynn]

Recording through internal microphone produces crackling noise on playback. This happens regardless of settings for input device using alsamixer. When using the ubuntu-bug wizard I said the first test passed because the audio was remarkably better than the 2nd but there was still minor crackling, so I am not sure how to do some ALSA only tests to verify the culprit really is PulseAudio, please advise.

Update: I just discovered arecord and did a test. The crackling is still present with arecord.

Update2: I used set options snd-hda-intel position_fix=2 a second time and it appears audio is recording correctly now (and saved correctly). I had it set to 1 for a long time it appears, not sure if I hadn't added that if it would do the same behaviour of set options snd-hda-intel position_fix=2.

Tried so far:
https://wiki.ubuntu.com/Audio/PositionReporting
set options snd-hda-intel position_fix=1
load-module module-udev-detect tsched=0

Related issues:
http://askubuntu.com/questions/315282/crackling-sound-from-microphone-recently-in-13-04

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: pulseaudio 1:3.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10
Uname: Linux 3.8.0-32-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: elijah 2775 F.... pulseaudio
 /dev/snd/controlC0: elijah 2775 F.... pulseaudio
                      elijah 11562 F.... alsamixer
Date: Fri Nov 1 17:29:49 2013
InstallationDate: Installed on 2013-06-04 (150 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:MID successful
Symptom_Card: Built-in Audio - HDA Intel MID
Symptom_Jack: Mic, Internal
Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:MID failed
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [43192RU, Conexant CX20585, Mic, Internal] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/27/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6NET74WW (1.34 )
dmi.board.name: 43192RU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6NET74WW(1.34):bd10/27/2010:svnLENOVO:pn43192RU:pvrThinkPadW510:rvnLENOVO:rn43192RU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 43192RU
dmi.product.version: ThinkPad W510
dmi.sys.vendor: LENOVO

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 13.04 (raring) reached end-of-life on January 27, 2014.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]