Public bug reported:

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

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1636376

Title:
  Virtualbox Driver problem from xenial version

Status in linux package in Ubuntu:
  New

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

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