This started affecting me with the kernel update to 4.4.0-112-generic on xenial. I booted the old kernel and the issue went away. Tried a few times back and forth and the 4.4.0-112 kernel consistently has the sound dropouts, while 4.4.0-108 does not.
Also tested with 3 different audio cards (by varying manufacturers), same result on each. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1576420 Title: [H55M-D2H, Realtek ALC887, Green Line Out, Rear] Underruns, dropouts or crackling sound Status in pulseaudio package in Ubuntu: New Bug description: crackling and noisy audio out of only LH speaker. Only recently started on upgrade to 16.04. Previous versions worked correctly with no changes. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: pulseaudio 1:8.0-0ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic i686 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: tron 1912 F.... pulseaudio /dev/snd/controlC0: tron 1912 F.... pulseaudio CurrentDesktop: Unity Date: Fri Apr 29 07:17:59 2016 InstallationDate: Installed on 2016-04-24 (4 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1) SourcePackage: pulseaudio Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:MID successful Symptom_Card: Built-in Audio - HDA Intel MID Symptom_Jack: Green Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test failed Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [H55M-D2H, Realtek ALC887, Green Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/04/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F1 dmi.board.name: H55M-D2H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF1:bd05/04/2010:svnGigabyteTechnologyCo.,Ltd.:pnH55M-D2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH55M-D2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: H55M-D2H dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1576420/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
