[20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns, dropouts or crackling sound

[Marc-Andre Meloche]

Hello, i'm currently having the same issue on a Thinkpad T450, with Ubuntu 15.10 and 15.04

I connect my headphones to the headphone jack, when i connect the headphone jack in the headphone port, i get the same cracking, popping sound as startup and shutdown/reboot.

So, when i boot, i get a cracking, popping sound that overpowers the headphones, it still occurs when i shutdown the laptop or reboot.

The output of alsa-info.sh gives me a different codec instead of the proposed fix information
0x10ec0292 0x17aa5036 0

i have
0x10ec0292 0x17aa5034 0

I tried the fix with both 0x17aa5036 and 0x17aa5034, on Ubuntu 15.10 and 15.04 without luck, the symptom stays, the cracking sound appears at startup and shutdown.

I tried fedora 23 and i still have the issue.

Probably caused by the same issue, i get a static noise in the both headphones if i mute it goes away

Thanks for your help.

Almost similar issue as specified here

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1502155

Detailed info :
Description: Ubuntu 15.10
Release: 15.10

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
Uname: Linux 4.2.0-23-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: madmantm 1370 F.... pulseaudio
                      madmantm 1916 F.... alsamixer
 /dev/snd/controlC0: madmantm 1370 F.... pulseaudio
CurrentDesktop: GNOME
Date: Thu Jan 14 22:18:30 2016
InstallationDate: Installed on 2016-01-15 (0 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
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: Black Headphone Out, Right
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/23/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET55WW (1.20 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BVCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40705 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJBET55WW(1.20):bd12/23/2015:svnLENOVO:pn20BVCTO1WW:pvrThinkPadT450:rvnLENOVO:rn20BVCTO1WW:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BVCTO1WW
dmi.product.version: ThinkPad T450
dmi.sys.vendor: LENOVO

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Peter McSmith (billwong1234)]

i have the same issue, brand new thinkpad t450, the soundcracking is quite displeasing.

[Marc-Andre Meloche (marcandremeloche)]

i have additional information, by modifying settings in PowerTop i was able to reproduce the sound i hear while the machine is rebooting, including plugging my headphones in the jack.

By switching the option at "Enable Audio Code Power Management" at Good, i hear the sound and the static doesn't stop, at Bad it stops, however when i insert the jack i still hear the sound.

The switching in powertop does the following

GOOD
echo ' ' > ' /sys/module/snd_hda_intel/parameters/power_save

BAD
echo '1' > ' /sys/module/snd_hda_intel/parameters/power_save

[Marc-Andre Meloche (marcandremeloche)]

i can confirm that the issue is not present in ubuntu 14.04.3

[Raymond (superquad-vortex2)]

Try hda-analyzer to mute the signal from node 0x0b in those amp in at node 0x0c and 0x0d

Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x02 0x0b

 Node 0x0d [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x03 0x0b

[Marc-Andre Meloche (marcandremeloche)]

Hello Raymond, i have tried what you said, and i noticed something.

I tried hda-analyzer, as mentionned, checked Node[0x1a] PIN

In the Widget Control, if i uncheck the IN option, i get the noise i mentioned earlier.

I attached a screenshot.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.10 (wily) reached end-of-life on July 28, 2016.

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. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.