if the problem is still not fixed
you need to enable trace points to trace the hda_unsol_event which is
triggered when you plug and unplug any jack
Tracepoints
~~~~~~~~~~~
The hd-audio driver gives a few basic tracepoints.
`hda:hda_send_cmd` traces each CORB write while `hda:hda_get_response`
traces the response from RIRB (only when read from the codec driver).
`hda:hda_bus_reset` traces the bus-reset due to fatal error, etc,
`hda:hda_unsol_event` traces the unsolicited events, and
`hda:hda_power_down` and `hda:hda_power_up` trace the power down/up
via power-saving behavior.
Enabling all tracepoints can be done like
------------------------------------------------------------------------
# echo 1 > /sys/kernel/debug/tracing/events/hda/enable
------------------------------------------------------------------------
then after some commands, you can traces from
/sys/kernel/debug/tracing/trace file. For example, when you want to
trace what codec command is sent, enable the tracepoint like:
------------------------------------------------------------------------
# cat /sys/kernel/debug/tracing/trace
# tracer: nop
#
# TASK-PID CPU# TIMESTAMP FUNCTION
# | | | | |
<...>-7807 [002] 105147.774889: hda_send_cmd: [0:0] val=e3a019
<...>-7807 [002] 105147.774893: hda_send_cmd: [0:0] val=e39019
<...>-7807 [002] 105147.999542: hda_send_cmd: [0:0] val=e3a01a
<...>-7807 [002] 105147.999543: hda_send_cmd: [0:0] val=e3901a
<...>-26764 [001] 349222.837143: hda_send_cmd: [0:0] val=e3a019
<...>-26764 [001] 349222.837148: hda_send_cmd: [0:0] val=e39019
<...>-26764 [001] 349223.058539: hda_send_cmd: [0:0] val=e3a01a
<...>-26764 [001] 349223.058541: hda_send_cmd: [0:0] val=e3901a
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1291616
Title:
[HDA-Intel - HDA Intel, playback] Underruns, dropouts or crackling
sound
Status in “alsa-driver” package in Ubuntu:
Confirmed
Bug description:
Description: Ubuntu 12.04.4 LTS
Release: 12.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.8.0-37.53~precise1-generic 3.8.13.18
Uname: Linux 3.8.0-37-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k3.8.0-37-generic.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC260 Analog [ALC260 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC260 Analog [ALC260 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: george 1811 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x80000000 irq 41'
Mixer name : 'Realtek ALC260'
Components : 'HDA:10ec0260,104d0000,00100300
HDA:14f12bfa,104d0200,00090000'
Controls : 18
Simple ctrls : 7
Date: Wed Mar 12 21:00:56 2014
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386
(20130820.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [HDA-Intel - HDA Intel, playback] Underruns, dropouts or crackling
sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/02/2006
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R0084J1
dmi.chassis.asset.tag: Reserved
dmi.chassis.type: 10
dmi.chassis.vendor: Reserved
dmi.chassis.version: Reserved
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvrR0084J1:bd06/02/2006:svnSonyCorporation:pnVGN-FS315M:pvrC3LLRJF8:cvnReserved:ct10:cvrReserved:
dmi.product.name: VGN-FS315M
dmi.product.version: C3LLRJF8
dmi.sys.vendor: Sony Corporation
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