[Aspire 5750Z, Realtek ALC269VB, Speaker, Internal] Background noise or low volume

[Ankit Singh]

High crackling/popping sound with low volume from laptop speakers when playing any audio video file.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21
Uname: Linux 4.4.0-42-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ankit 1866 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Jun 23 08:55:10 2017
InstallationDate: Installed on 2016-07-14 (343 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: High background noise, or volume is too low
Title: [Aspire 5750Z, Realtek ALC269VB, Speaker, Internal] Background noise or low volume
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/11/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.12
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE50_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.12
dmi.modalias: dmi:bvnAcer:bvrV1.12:bd07/11/2011:svnAcer:pnAspire5750Z:pvrV1.12:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12:
dmi.product.name: Aspire 5750Z
dmi.product.version: V1.12
dmi.sys.vendor: Acer