PandaBoard audio loud pops after playing sound over headphone jack

[Paul Larson]

On quantal images, most recently reproduced on panda armhf desktop omap4 image from 20121005

This is easily reproducible when using the headphone jack and any audio, even the sound test from sound settings easily reproduces the problem. Usually after a sound plays, but sometimes at the beginning of another one, there is a loud "pop" over the headphone jack. If I switch the audio output to hdmi, I do not have this problem.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: alsa-base 1.0.25+dfsg-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-212.19-omap4 3.5.4
Uname: Linux 3.5.0-212-omap4 armv7l
ApportVersion: 2.6.1-0ubuntu1
Architecture: armhf
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 1692 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 1692 F.... pulseaudio
Date: Fri Oct 5 12:04:43 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta armhf+omap4 (20121005)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: OMAPHDMI - OMAPHDMI
Symptom_Type: No auto-mute between outputs
Title: [PandaBoard - PandaBoard, playback] No automute
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Hey Luke, could you have a look to that?

[Sebastien Bacher (seb128)]

(setting to rls-q-notfixing, it's not likely we will get that resolved for q since it's after hard freeze)

[Luke Yelavich (themuso)]

I can confirm this, and I can also confirm that its not PulseAudio related. I get the same clipping at the end of the same test sounds when played via ALSA on the command-line, with PulseAudio disabled.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.10 (quantal) reached end-of-life on May 16, 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.]