[20344, Realtek ALC233, Speaker, Internal] Underruns, dropouts or crackling sound

[Mathieu Marquer]

Crackling sound only when audio is played during a few minutes after startup, then normal sound.

During ubuntu-bug test, the first set of sounds played fine, crackling began immediately after the end of the first set, continued before I started the second set, and lasted during the first seconds of the second set, then became normal again during the remaining of the second set and after it.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:8.0-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
Uname: Linux 4.4.0-10-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mathieu 1848 F.... pulseaudio
 /dev/snd/pcmC1D0p: mathieu 1848 F...m pulseaudio
 /dev/snd/controlC1: mathieu 1848 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Mar 6 12:56:56 2016
InstallationDate: Installed on 2016-01-31 (34 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160131)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Audio interne - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [20344, Realtek ALC233, Speaker, Internal] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/16/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: 96CN29WW(V1.15)
dmi.board.asset.tag: 31900058WIN
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900058WIN
dmi.chassis.asset.tag: 31900058WIN
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Yoga 2 13
dmi.modalias: dmi:bvnLENOVO:bvr96CN29WW(V1.15):bd10/16/2014:svnLENOVO:pn20344:pvrLenovoYoga213:rvnLENOVO:rnINVALID:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoYoga213:
dmi.product.name: 20344
dmi.product.version: Lenovo Yoga 2 13
dmi.sys.vendor: LENOVO