Thanks for the bug report. It looks like you are using Bluetooth audio and also experiencing lots of kernel crashes in the rtw88_core module.
Just in case the kernel crashes are not related, please check that you don't still have the Settings window open as that can cause some audio quality problems. Next, please try disabling wifi. Because 2.4GHz wifi networks can directly interfere with Bluetooth signal quality. Please also run: lspci > lspci.txt lsusb > lsusb.txt and attach the resulting text files here. ** Summary changed: - [CMT-SBT20, playback] Underruns, dropouts or crackling sound + Bluetooth audio underruns, dropouts or crackling sound ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete ** Tags added: a2dp ** Package changed: pulseaudio (Ubuntu) => linux (Ubuntu) -- 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/1913947 Title: Bluetooth audio underruns, dropouts or crackling sound Status in linux package in Ubuntu: Incomplete Bug description: The audio isn't in sync with video (ex. with youtube). Sometimes the audio is missing ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: pulseaudio 1:13.99.2-1ubuntu2.3 ProcVersionSignature: Ubuntu 5.8.0-41.46-generic 5.8.18 Uname: Linux 5.8.0-41-generic x86_64 ApportVersion: 2.20.11-0ubuntu50.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: simone 2131 F.... pulseaudio /dev/snd/controlC0: simone 2131 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Jan 31 15:56:52 2021 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=it_IT.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio Symptom: audio Symptom_Card: CMT-SBT20 Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [CMT-SBT20, playback] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/16/2019 dmi.bios.release: 5.14 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X512DK.305 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X512DK dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX512DK.305:bd07/16/2019:br5.14:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX512DK_X512DK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX512DK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: VivoBook dmi.product.name: VivoBook_ASUSLaptop X512DK_X512DK dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1913947/+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