This bug affects me too. Linux laptop 5.4.0-66-generic #74-Ubuntu SMP Wed Jan 27 22:54:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux Ubuntu 20.04.2 LTS
I think this bug may (at least in some cases) be related to this here question: https://askubuntu.com/questions/1234807/no-sound-after-sleep-ubuntu-20-04 . The solution they found involves removing the sound device and requesting a rescan: echo 1 > /sys/bus/pci/devices/<device_address>/remove echo 1 > /sys/bus/pci/rescan They automated this through a script such as this one: https://github.com/GHopperMSK/configs/blob/master/bin/restart-sound -- 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/1888598 Title: Pulseaudio breaks HDMI audio on sleep/wake Status in pulseaudio package in Ubuntu: Confirmed Bug description: on a fresh Ubuntu 20.04 x64 install, I've noticed some troubling bugs with pulseaudio after putting my system to sleep and then waking it up. these bugs aren't present on a fresh boot, only after resuming from sleep: - it forgets which sound output device it's set to, and always reverse to the motherboard's S/PDIF output. - I have two devices connected to my video card, one is a displayport monitor, and one is a home theater receiver via HDMI. it confuses the two, and randomly switches which device it thinks is capable of surround sound. - it sometimes refuses to switch to the correct audio device, and just resets any choice back to the internal S/PDIF, until the system is rebooted. as you can imagine, this a pretty frustrating state of affairs. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: pulseaudio 1:13.99.1-1ubuntu3.4 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: tessa 3387 F.... pulseaudio /dev/snd/pcmC1D7p: tessa 3387 F...m pulseaudio /dev/snd/controlC2: tessa 3387 F.... pulseaudio /dev/snd/controlC0: tessa 3387 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Jul 22 18:38:42 2020 InstallationDate: Installed on 2020-07-15 (7 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/18/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3503 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: GRYPHON Z97 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx 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.:bvr3503:bd04/18/2018:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnGRYPHONZ97:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: ASUS MB dmi.product.name: All Series dmi.product.sku: All dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1888598/+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
