UPDATE: even after disconnection of the front audio panel, the issue still happens once in a blue moon: Left pulseaudio in debug mode for several days after fix:
$ tail -f /tmp/pulseaudio.log | grep is.now (3284.252| 96.036) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (3285.280| 1.006) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (4430.108| 136.098) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (4431.133| 1.003) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (65064.220| 35.638) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (65065.244| 1.023) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (163655.996| 23.995) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (163657.020| 1.023) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (166826.748| 0.027) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (166827.772| 0.712) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (170071.580| 2.337) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (170072.605| 0.483) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (170196.156| 63.020) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (170197.180| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (173292.956| 110.638) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (173293.980| 1.023) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (405426.784| 13.234) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (405427.804| 0.998) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (501250.208| 28.079) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (501251.228| 1.018) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (508205.532| 1.475) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (508206.556| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (576198.464| 60.134) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (576199.484| 1.018) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (577215.964| 3.252) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (577216.992| 0.726) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (577250.780| 26.097) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (577251.804| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (577291.740| 0.147) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (577292.764| 0.515) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (577495.964| 54.201) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (577496.988| 1.023) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (578591.196| 137.355) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (578592.220| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (589797.436| 1.779) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (589798.460| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (589802.556| 4.095) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (589803.580| 1.022) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (593142.972| 274.353) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (593143.996| 1.002) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (593435.804| 267.849) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (593436.832| 1.005) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (594411.680| 25.302) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (594412.700| 1.001) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged (594960.540| 37.896) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in (594961.564| 1.002) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged -- 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/874535 Title: Volume Slider Jumps, due to rapidly changing hardware jack sense state Status in alsa-driver package in Ubuntu: Triaged Bug description: In Oneiric Release, The volume slider randomly jump down a notch or two for fraction of a second, even when there is no audio playing on the system. If mute is selected, the menu will quickly flip out of mute mode and back again. This change actually affects the audio output, resulting in pops correlated with the volume changes. nVidia GF106 Audio Controller --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC892 Analog [ALC892 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jfrorie 9959 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfb9f8000 irq 54' Mixer name : 'Realtek ALC892' Components : 'HDA:10ec0892,1462522c,00100302' Controls : 35 Simple ctrls : 20 Card2.Amixer.info: Card hw:2 'Generic'/'HD-Audio Generic at 0xfbcf8000 irq 55' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100200' Controls : 4 Simple ctrls : 1 Card2.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] DistroRelease: Ubuntu 11.10 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) Package: pulseaudio 1:1.0-0ubuntu3.1 PackageArchitecture: amd64 ProcEnviron: PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9 Tags: oneiric running-unity Uname: Linux 3.0.0-14-generic x86_64 UpgradeStatus: Upgraded to oneiric on 2011-10-14 (82 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 11/16/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V25.0 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: X58A-GD45 (MS-7522) dmi.board.vendor: MSI dmi.board.version: 5.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 5.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV25.0:bd11/16/2010:svnMSI:pnMS-7522:pvr5.0:rvnMSI:rnX58A-GD45(MS-7522):rvr5.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr5.0: dmi.product.name: MS-7522 dmi.product.version: 5.0 dmi.sys.vendor: MSI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/874535/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
