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[Mentor <mentor@xxxxxxxxxx>]

apport information

** Attachment added: "BootDmesg.txt"
   https://bugs.launchpad.net/bugs/1431722/+attachment/4345387/+files/BootDmesg.txt

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https://bugs.launchpad.net/bugs/1431722

Title:
  Shutdown hangs at ubuntu splash screen on Lenovo Yoga 13

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When shutting down (either through GUI or sudo halt) ubuntu starts the
  shutwown process, but hangs at the splash screen.

  After some minutes I simply hold the power button to power down.

  The device is a dual booted Lenovo yoga 13.

  System info
  14.10

  Expexted behavior
  Device poweroff at shutdown
  Device poweroff and back on when reboot

  Behavior
  Hang at ubuntu splash screen indefinitely
  --- 
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mentor     2205 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=491ae5d3-5761-4951-9a34-bb320ccfae55
  InstallationDate: Installed on 2015-02-26 (16 days ago)
  InstallationMedia: It
  MachineType: LENOVO 2191
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic root=UUID=e5e9c0eb-1803-45a3-81f9-bd7ce6430e58 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-31.43-generic 3.16.7-ckt5
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-31-generic N/A
   linux-backports-modules-3.16.0-31-generic  N/A
   linux-firmware                             1.138.1
  StagingDrivers: r8723au
  Tags:  utopic staging
  Uname: Linux 3.16.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/28/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 66CN55WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: INVALID
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900003WIN8 STD MLT
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Yoga 13
  dmi.modalias: dmi:bvnLENOVO:bvr66CN55WW:bd02/28/2013:svnLENOVO:pn2191:pvrLenovoIdeaPadYoga13:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadYoga13:
  dmi.product.name: 2191
  dmi.product.version: Lenovo IdeaPad Yoga 13
  dmi.sys.vendor: LENOVO

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