Public bug reported: I still have small crackles in my line input audio, even after trying everything suggested in https://wiki.ubuntu.com/Audio/PositionReporting
I also lowered the line boost level in alsamixer, which helped, but there are still slight pops and cracks every second or two, depending on the level of audio coming in. System info Description: Ubuntu 17.04 Release: 17.04 pulseaudio: Installed: 1:10.0-1ubuntu2 Candidate: 1:10.0-1ubuntu2 Version table: *** 1:10.0-1ubuntu2 500 500 http://mirror.steadfast.net/ubuntu zesty/main amd64 Packages 100 /var/lib/dpkg/status alsa-base: Installed: 1.0.25+dfsg-0ubuntu5 Candidate: 1.0.25+dfsg-0ubuntu5 Version table: *** 1.0.25+dfsg-0ubuntu5 500 500 http://mirror.steadfast.net/ubuntu zesty/main amd64 Packages 500 http://mirror.steadfast.net/ubuntu zesty/main i386 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: pulseaudio 1:10.0-1ubuntu2 ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15 Uname: Linux 4.10.0-22-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.4-0ubuntu4.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: brad 2455 F.... pulseaudio /dev/snd/controlC1: brad 2455 F.... pulseaudio Date: Sat Jun 3 13:56:58 2017 InstallationDate: Installed on 2017-04-23 (41 days ago) InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/21/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.30 dmi.board.name: X370 Killer SLI/ac dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.30:bd04/21/2017:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX370KillerSLI/ac:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. ** Affects: pulseaudio (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug zesty ** Attachment added: "Sample Recording" https://bugs.launchpad.net/bugs/1695652/+attachment/4888554/+files/Audio_Crackle -- 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/1695652 Title: Audio recordings crackle Status in pulseaudio package in Ubuntu: New Bug description: I still have small crackles in my line input audio, even after trying everything suggested in https://wiki.ubuntu.com/Audio/PositionReporting I also lowered the line boost level in alsamixer, which helped, but there are still slight pops and cracks every second or two, depending on the level of audio coming in. System info Description: Ubuntu 17.04 Release: 17.04 pulseaudio: Installed: 1:10.0-1ubuntu2 Candidate: 1:10.0-1ubuntu2 Version table: *** 1:10.0-1ubuntu2 500 500 http://mirror.steadfast.net/ubuntu zesty/main amd64 Packages 100 /var/lib/dpkg/status alsa-base: Installed: 1.0.25+dfsg-0ubuntu5 Candidate: 1.0.25+dfsg-0ubuntu5 Version table: *** 1.0.25+dfsg-0ubuntu5 500 500 http://mirror.steadfast.net/ubuntu zesty/main amd64 Packages 500 http://mirror.steadfast.net/ubuntu zesty/main i386 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: pulseaudio 1:10.0-1ubuntu2 ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15 Uname: Linux 4.10.0-22-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.4-0ubuntu4.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: brad 2455 F.... pulseaudio /dev/snd/controlC1: brad 2455 F.... pulseaudio Date: Sat Jun 3 13:56:58 2017 InstallationDate: Installed on 2017-04-23 (41 days ago) InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/21/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.30 dmi.board.name: X370 Killer SLI/ac dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.30:bd04/21/2017:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX370KillerSLI/ac:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. 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