it is strange that your headphone is plugged in at 25.567 , unplugged at 25.781 and plugged again 25.855
seem related to [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_14.2.analog-stereo. ( 25.567| 16.401) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in ( 25.567| 0.000) D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status yes ( 25.568| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding port analog-output-headphones ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Activating path analog-output-headphones ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Path analog-output-headphones (Headphones), direction=1, priority=90, probed=yes, supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=64, min_dB=-179, max_dB=0 ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Master, direction=1, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x7ffffffffffff, n_channels=1, override_map=yes ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Headphone, direction=1, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=4, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Front, direction=1, switch=1, volume=3, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Surround, direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Side, direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element Center, direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x7ffffffffffff, n_channels=1, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element LFE, direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x7ffffffffffff, n_channels=1, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element PCM, direction=1, switch=0, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element IEC958, direction=1, switch=2, volume=0, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x0, n_channels=0, override_map=no ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone, alsa_name='Front Headphone Jack', detection possible ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone Phantom, alsa_name='Front Headphone Phantom Jack', detection unavailable ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone, alsa_name='Headphone Jack', detection unavailable ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone Phantom, alsa_name='Headphone Phantom Jack', detection unavailable ( 25.568| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone Mic, alsa_name='Headphone Mic Jack', detection unavailable ( 25.569| 0.000) I: [alsa-sink-ALC892 Analog] alsa-sink.c: Successfully enabled deferred volume. ( 25.569| 0.000) I: [alsa-sink-ALC892 Analog] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 dB. ( 25.569| 0.000) I: [alsa-sink-ALC892 Analog] alsa-sink.c: Fixing base volume to 0.00 dB ( 25.569| 0.000) I: [alsa-sink-ALC892 Analog] alsa-sink.c: Using hardware volume control. Hardware dB scale supported. ( 25.569| 0.000) I: [alsa-sink-ALC892 Analog] alsa-sink.c: Using hardware mute control. ( 25.569| 0.000) I: [pulseaudio] sink.c: Changed port of sink 0 "alsa_output.pci-0000_00_14.2.analog-stereo" to analog-output-headphones ( 25.569| 0.000) I: [pulseaudio] module-device-restore.c: Restoring volume for sink alsa_output.pci-0000_00_14.2.analog-stereo. ( 25.569| 0.000) D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: Requested volume: 0: 20% 1: 20% ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: in dB: 0: -41.80 dB 1: -41.80 dB ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: Got hardware volume: 0: 20% 1: 20% ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: in dB: 0: -41.80 dB 1: -41.80 dB ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: Calculated software volume: 0: 100% 1: 100% (accurate-enough=yes) ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] alsa-sink.c: in dB: 0: 0.00 dB 1: 0.00 dB ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] sink.c: Volume going down to 13177 at 400878170 ( 25.569| 0.000) D: [alsa-sink-ALC892 Analog] sink.c: Volume change to 13177 at 400878170 was written 34 usec late ( 25.569| 0.000) I: [pulseaudio] module-device-restore.c: Restored volume: 0: 20% 1: 20% ( 25.570| 0.000) I: [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_14.2.analog-stereo. ( 25.570| 0.000) D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. ( 25.781| 0.210) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged ( 25.781| 0.000) D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status no ( 25.781| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding port analog-output-headphones ( 25.781| 0.000) D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Activating path analog-output ( 25.783| 0.000) I: [pulseaudio] module-device-restore.c: Restored volume: 0: 39% 1: 39% ( 25.783| 0.000) I: [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_14.2.analog-stereo. ( 25.785| 0.001) D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. ( 25.855| 0.070) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now plugged in ( 25.855| 0.000) D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status yes ( 25.855| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding port analog-output-headphones -- 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
