Thank you for reporting this bug to Ubuntu. Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.
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. ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- 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/990498 Title: pulseaudio sometime starts whistling, have to restart with pulseaudio -k Status in pulseaudio package in Ubuntu: Incomplete Bug description: Sometime usually during seeking through a movie in Totem or switching videos in youtube play lists audio goes strange and whistley. This is worked around by killing pulseaduio with pulseaudio -k ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: pulseaudio 1:1.1-0ubuntu15 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: graingert 4346 F.... pulseaudio /dev/snd/pcmC0D0p: graingert 4346 F...m pulseaudio /dev/snd/controlC1: graingert 4346 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xfba00000 irq 54' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0892,14627681,00100302 HDA:80862805,80862805,00100000' Controls : 50 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'U0x46d0x81d'/'USB Device 0x46d:0x81d at usb-0000:06:00.0-2, high speed' Mixer name : 'USB Mixer' Components : 'USB046d:081d' Controls : 2 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum Capture channels: Mono Limits: Capture 0 - 16 Mono: Capture 13 [81%] [25.50dB] [on] Date: Sat Apr 28 14:31:51 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/08/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V23.2 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z68A-GD55 (MS-7681) dmi.board.vendor: MSI dmi.board.version: 4.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 4.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV23.2:bd09/08/2011:svnMSI:pnMS-7681:pvr4.0:rvnMSI:rnZ68A-GD55(MS-7681):rvr4.0:cvnMSI:ct3:cvr4.0: dmi.product.name: MS-7681 dmi.product.version: 4.0 dmi.sys.vendor: MSI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/990498/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

