I see this change when comparing the CurrentDmesg.txt files: -xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
The -32 kernel doesn't emit that message so maybe USB 3.0 isn't working correctly and causes audio devices to not show up? -- 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/1787251 Title: No sound devices after booting 4.15.0-32-generic Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: New Bug description: There is no sound and no sound devices appear present (either internal or USB devices) after booting 4.15.0-32-generic. If I boot back into -31, everything works normally. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-32-generic 4.15.0-32.35 ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18 Uname: Linux 4.15.0-32-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair hid_plantronics i915 sdhci_pci sdhci wmi ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. CurrentDesktop: ubuntu:GNOME Date: Wed Aug 15 12:02:10 2018 HibernationDevice: RESUME=UUID=55a42c82-50bf-4e75-a133-dbd3aa93611b InstallationDate: Installed on 2018-07-24 (22 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180724) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-32-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-32-generic N/A linux-backports-modules-4.15.0-32-generic N/A linux-firmware 1.173.1 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/16/2018 dmi.bios.vendor: Intel Corp. dmi.bios.version: KYSKLi70.86A.0055.2018.0516.1629 dmi.board.name: NUC6i7KYB dmi.board.vendor: Intel Corporation dmi.board.version: H90766-406 dmi.chassis.type: 3 dmi.chassis.vendor: Intel Corporation dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnIntelCorp.:bvrKYSKLi70.86A.0055.2018.0516.1629:bd05/16/2018:svn:pn:pvr:rvnIntelCorporation:rnNUC6i7KYB:rvrH90766-406:cvnIntelCorporation:ct3:cvr1.0: --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dean 9554 F.... pulseaudio /dev/snd/controlC1: dean 9554 F.... pulseaudio /dev/snd/controlC0: dean 9554 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=55a42c82-50bf-4e75-a133-dbd3aa93611b InstallationDate: Installed on 2018-07-24 (22 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180724) NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-31-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-31.33-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-31-generic N/A linux-backports-modules-4.15.0-31-generic N/A linux-firmware 1.173.1 Tags: bionic Uname: Linux 4.15.0-31-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/16/2018 dmi.bios.vendor: Intel Corp. dmi.bios.version: KYSKLi70.86A.0055.2018.0516.1629 dmi.board.name: NUC6i7KYB dmi.board.vendor: Intel Corporation dmi.board.version: H90766-406 dmi.chassis.type: 3 dmi.chassis.vendor: Intel Corporation dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnIntelCorp.:bvrKYSKLi70.86A.0055.2018.0516.1629:bd05/16/2018:svn:pn:pvr:rvnIntelCorporation:rnNUC6i7KYB:rvrH90766-406:cvnIntelCorporation:ct3:cvr1.0: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1787251/+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