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Machine is an T440s. Todays Daily Build of Ubuntu Unity, but was also on
Ubuntu 15.10 Beta

While booting into Desktop a crackling sound appears (like connect
speakers or headphones to a music player if not muted) and it sounds
very unhealthy to the speakers.

When using Debian Testing I have the issue while booting. With Fedora 23
Beta its also the same while booting. Always this unhealthy sounding
crackling noise and then working normal after booting is finished.
Muting is working, volume selecting is working without any issues, just
while booting to Desktop there seems to be something not working
properly while initializing internal speakers.

On latest Ubuntu 14.04.3 there is no crackling while booting. Just
booting normally into Desktop. You can hear that the speakers are
initialized with a very silent plopping sound (as also in Debian Stable)
but I think I start observing it just because of this crackling sound
before. I was running Ubuntu 14.04.2 plus LTS Enabled Stack before and
there were also no such issues.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-12.14-generic 4.2.1
Uname: Linux 4.2.0-12-generic x86_64
ApportVersion: 2.19-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC1D0p:   ubuntu     1987 F...m pulseaudio
 /dev/snd/controlC1:  ubuntu     1987 F.... pulseaudio
 /dev/snd/controlC0:  ubuntu     1987 F.... pulseaudio
CasperVersion: 1.365
CurrentDesktop: Unity
Date: Fri Oct  2 13:32:32 2015
LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151002)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
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: None of the above
Title: [20AQ0069GE, Realtek ALC3232, Speaker, Internal] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/22/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET84WW (2.34 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20AQ0069GE
dmi.board.vendor: LENOVO
dmi.board.version: 0B98401 PRO
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGJET84WW(2.34):bd06/22/2015:svnLENOVO:pn20AQ0069GE:pvrThinkPadT440s:rvnLENOVO:rn20AQ0069GE:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20AQ0069GE
dmi.product.version: ThinkPad T440s
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: debian
     Importance: Unknown
         Status: Confirmed

** Affects: fedora
     Importance: Unknown
         Status: Unknown

** Affects: suse
     Importance: Medium
         Status: Fix Released


** Tags: amd64 apport-bug wily
-- 
[20AQ0069GE, Realtek ALC3232, Speaker, Internal] crackling sound while booting Unity-Desktop
https://bugs.launchpad.net/bugs/1502155
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