The same error persists when booted from Ubuntu 18.04 USB live stick. However, after power cycle prompted at Live Ubuntu shutdown, the sound card had been correctly detected in my main Ubuntu 16.04.
** Attachment added: "dmesg_sound_works.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814921/+attachment/5236697/+files/dmesg_sound_works.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1814921 Title: Soundcard isn't recognized after update Status in linux package in Ubuntu: Confirmed Bug description: After last update soundcard stopped working. $ sudo aplay -l aplay: device_list:268: no soundcards found... ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-141-generic 4.4.0-141.167 ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162 Uname: Linux 4.4.0-141-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: Unity Date: Wed Feb 6 15:49:19 2019 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=3f6d36fa-7c5e-4a8e-843f-d38f6177dbf0 InstallationDate: Installed on 2017-02-18 (717 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: System manufacturer System Product Name ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-141-generic.efi.signed root=UUID=0e8ab561-3465-4757-8331-5ee5a859f119 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-141-generic N/A linux-backports-modules-4.4.0-141-generic N/A linux-firmware 1.157.21 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/27/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3016 dmi.board.asset.tag: Default string dmi.board.name: Z170I PRO GAMING dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3016:bd12/27/2016:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170IPROGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer --- ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes InstallationDate: Installed on 2017-02-18 (717 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Package: alsa-base 1.0.25+dfsg-0ubuntu5 PackageArchitecture: all ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162 Tags: xenial Uname: Linux 4.4.0-141-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/27/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3016 dmi.board.asset.tag: Default string dmi.board.name: Z170I PRO GAMING dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3016:bd12/27/2016:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170IPROGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814921/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
