Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc2 ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Also affects: linux (Ubuntu Bionic) Importance: High Status: Confirmed ** Also affects: linux-azure (Ubuntu) Importance: Undecided Status: New ** Tags added: kernel-da-key kernel-hyper-v ** Changed in: linux (Ubuntu Bionic) Status: Confirmed => Incomplete -- 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/1766300 Title: hv-fcopy-daemon service fails to start if /dev/vmbus/hv_fcopy doesn't exist Status in linux package in Ubuntu: Incomplete Status in linux-azure package in Ubuntu: New Status in linux source package in Bionic: Incomplete Status in linux-azure source package in Bionic: New Bug description: On VMs launched in Azure, /dev/vmbus/hv_fcopy doesn't exist, so hv- fcopy-daemon fails to start. This means that boot is degraded by default: $ systemctl list-units --failed --no-legend hv-fcopy-daemon.service loaded failed failed Hyper-V File Copy Protocol Daemon $ systemctl is-system-running degraded which makes detecting other failures much harder to automate. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-cloud-tools-common 4.15.0-15.16 ProcVersionSignature: User Name 4.15.0-1004.4-azure 4.15.15 Uname: Linux 4.15.0-1004-azure x86_64 AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu6 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' CRDA: N/A Date: Mon Apr 23 16:27:47 2018 Dependencies: IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: Microsoft Corporation Virtual Machine PackageArchitecture: all PciMultimedia: ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-1004-azure root=UUID=fda9466a-9068-447f-8572-6d8d310eabd3 ro console=tty1 console=ttyS0 earlyprintk=ttyS0 rootdelay=300 RelatedPackageVersions: linux-restricted-modules-4.15.0-1004-azure N/A linux-backports-modules-4.15.0-1004-azure N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/02/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 090007 dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: 7.0 dmi.chassis.asset.tag: 7783-7084-3265-9085-8269-3286-77 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: 7.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090007:bd06/02/2017:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0: dmi.product.name: Virtual Machine dmi.product.uuid: 44FD5ABF-DE16-AD4A-B2E0-6E70167950AF dmi.product.version: 7.0 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1766300/+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
