Although apparently less pronounced, this still occurs in Saucy. I couldn't get Trusty to boot to check it.
Intel has absolutely nothing to do with this. ** Tags added: hw-specific saucy ** Tags added: regression-release -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1021509 Title: Random popping when on battery Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: When running my laptop on battery there are random, quiet popping sounds coming from the speaker. I cannot see if any app might be causing this but it does not occur when plugged into the mains. The sound panel doesn't show any apps accessing the sound but I'm not sure if it picks them all up. This didn't occur in Natty. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: pulseaudio 1:1.1-0ubuntu15.1 ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19 Uname: Linux 3.2.0-26-generic x86_64 NonfreeKernelModules: fglrx wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: SB [HDA ATI SB], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ken 2847 F.... pulseaudio /dev/snd/controlC0: ken 2847 F.... pulseaudio Card0.Amixer.info: Card hw:0 'SB'/'HDA ATI SB at 0xd2300000 irq 16' Mixer name : 'Realtek ALC272X' Components : 'HDA:10ec0272,1025036e,00100001' Controls : 20 Simple ctrls : 11 Card1.Amixer.info: Card hw:1 'HDMI'/'HDA ATI HDMI at 0xd2210000 irq 19' Mixer name : 'ATI RS690/780 HDMI' Components : 'HDA:1002791a,00791a00,00100000' Controls : 4 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Thu Jul 5 23:49:45 2012 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio UpgradeStatus: Upgraded to precise on 2012-06-26 (9 days ago) dmi.bios.date: 07/27/2011 dmi.bios.vendor: Acer dmi.bios.version: V2.14 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JE50_DN dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V2.14 dmi.modalias: dmi:bvnAcer:bvrV2.14:bd07/27/2011:svnAcer:pnAspire5551:pvrV2.14:rvnAcer:rnJE50_DN:rvrBaseBoardVersion:cvnAcer:ct10:cvrV2.14: dmi.product.name: Aspire 5551 dmi.product.version: V2.14 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1021509/+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