Thank you for reporting this bug to Ubuntu. Ubuntu 19.04 (disco) reached end-of-life on January 23, 2020.
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. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: alsa-driver (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1831849 Title: [1066AJU, Realtek ALC272, Speaker, Internal] Underruns, dropouts or crackling sound Status in alsa-driver package in Ubuntu: Won't Fix Bug description: Tried modifying /etc/pulse/default.pa with load-module module-udev- detect tsched=0, but it didn't help. Was working fine in 18.04. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.0.0-16.17-generic 5.0.8 Uname: Linux 5.0.0-16-generic x86_64 ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 10126 F.... pulseaudio /dev/snd/pcmC0D0c: ubuntu 10126 F...m pulseaudio /dev/snd/pcmC0D0p: ubuntu 10126 F...m pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Jun 6 01:01:05 2019 InstallationDate: Installed on 2018-04-21 (410 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1) PackageArchitecture: all ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Speaker, Internal Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [1066AJU, Realtek ALC272, Speaker, Internal] Underruns, dropouts or crackling sound UpgradeStatus: Upgraded to disco on 2019-04-30 (36 days ago) dmi.bios.date: 10/27/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 44CN43WW dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Emerald Lake dmi.board.vendor: LENOVO dmi.board.version: FAB1 dmi.chassis.asset.tag: Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnLENOVO:bvr44CN43WW:bd10/27/2011:svnLENOVO:pn1066AJU:pvrLenovoV570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1: dmi.product.family: HuronRiver System dmi.product.name: 1066AJU dmi.product.sku: System SKUNumber dmi.product.version: Lenovo V570 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1831849/+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

