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 v4.9 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/v4.9-rc2 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) 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/1636376 Title: Virtualbox Driver problem from xenial version Status in linux package in Ubuntu: Incomplete Bug description: When using ubuntu-mate or ubuntu-flashback, all of which is based on marco/metacity, there is a small possibilty for ubuntu mate/flashback desktop to be screen blurred "for its first start" in Virtualbox. But after executing "service lightdm restart" in tty1, it will be okay and never happend again on its next reboot. This only happened in VirtualBox instead of real machine. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic 4.4.0.45.48 ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21 Uname: Linux 4.4.0-45-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-45-generic. AplayDevices: Error: [Errno 2] 没有那个文件或目录: 'aplay' ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] 没有那个文件或目录: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] 没有那个文件或目录: 'amixer' Card0.Amixer.values: Error: [Errno 2] 没有那个文件或目录: 'amixer' CurrentDesktop: GNOME-Flashback:Unity Date: Tue Oct 25 13:10:17 2016 IwConfig: Error: [Errno 2] 没有那个文件或目录: 'iwconfig' Lsusb: Error: [Errno 2] 没有那个文件或目录: 'lsusb' MachineType: innotek GmbH VirtualBox ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic root=UUID=4f664138-11a0-4acb-852b-112295e49fe9 ro quiet swapaccount=1 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.4.0-45-generic N/A linux-backports-modules-4.4.0-45-generic N/A linux-firmware 1.157.4 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636376/+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
