Public bug reported: Occasionally my Lenovo t440s starts to make a constant crackling / humming sound. This doesn't stop sound from being played, but if no sound is playing, the noise persists.
As it's a new laptop, I thought it might be a hardware issue. It almost sounds like a bad earth connection. However, the culprit seems to be pulseaudio since killing it and restarting solves the problem. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: pulseaudio 1:4.0-0ubuntu11 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: james 2843 F.... pulseaudio /dev/snd/pcmC1D0p: james 2843 F...m pulseaudio /dev/snd/controlC0: james 2843 F.... pulseaudio CurrentDesktop: Unity Date: Fri May 2 09:09:37 2014 InstallationDate: Installed on 2014-04-11 (20 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140409) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/10/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET71WW (2.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQCTO1WW dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQCTO1WW dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO ** Affects: skype (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty -- 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/1315281 Title: skype occasionally makes constant crackling / humming sound until restarted or pulseaudio killed Status in “skype” package in Ubuntu: New Bug description: Occasionally my Lenovo t440s starts to make a constant crackling / humming sound. This doesn't stop sound from being played, but if no sound is playing, the noise persists. As it's a new laptop, I thought it might be a hardware issue. It almost sounds like a bad earth connection. However, the culprit seems to be pulseaudio since killing it and restarting solves the problem. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: pulseaudio 1:4.0-0ubuntu11 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: james 2843 F.... pulseaudio /dev/snd/pcmC1D0p: james 2843 F...m pulseaudio /dev/snd/controlC0: james 2843 F.... pulseaudio CurrentDesktop: Unity Date: Fri May 2 09:09:37 2014 InstallationDate: Installed on 2014-04-11 (20 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140409) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/10/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET71WW (2.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQCTO1WW dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQCTO1WW dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/skype/+bug/1315281/+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