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[陈伟琪 <1401980@xxxxxxxxxxxxxxxxxx>]

Please see my bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1441104

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https://bugs.launchpad.net/bugs/1401980

Title:
  0bc2:ab10 [Lenovo IdeaPad Y510P] USB 3.0 HDD connected to USB 3.0 port
  won't power off after unmounting

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Other than shutting down or pulling the cord out.
  May not be a kernel bug, didn't know otherwise..

  Test case:
  boot up, log in
  attach a usb 3 hdd ( one without external power) to a usb 3 port
  The option to "Safely Remove" will be available in nautilus & unity launcher icon, click on it

  What happens:
  Drive is unmounted, momentarily powered off & then re-powered on ( takes less than a sec.
  What should happen:
  drive should be powered off & stay off until re-attached

  If one connects the drive to a usb 2 port then it will power down

  To further confuse -
  If one boots up with the device connected or connecting after login then doing log out/in there is no longer a Safely remove option, only mount or unmount

  At no time does  udisksctl power-off -b /path/to actually work, it
  acts like first scenario, quickly powered off then right back on.

  Whether useful don't know-

  Drive(4): ST500LT012-1DG142
    Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
    ids:
     unix-device: '/dev/sdd'
    themed icons:  [drive-harddisk-usb]  [drive-harddisk]  [drive]
    symbolic themed icons:  [drive-harddisk-usb-symbolic]  [drive-harddisk-symbolic]  [drive-symbolic]  [drive-harddisk-usb]  [drive-harddisk]  [drive]
    is_media_removable=0
    has_media=1
    is_media_check_automatic=1
    can_poll_for_media=0
    can_eject=0
    can_start=0
    can_stop=0
    start_stop_type=shutdown
    sort_key=01hotplug/1418402194745573
    Volume(0): backup
      Type: GProxyVolume (GProxyVolumeMonitorUDisks2)
      ids:
       class: 'device'
       unix-device: '/dev/sdd1'
       uuid: '6b1c17a9-f65d-4926-96f8-73702c001b43'
       label: 'backup'
      themed icons:  [drive-harddisk-usb]  [drive-harddisk]  [drive]
      symbolic themed icons:  [drive-harddisk-usb-symbolic]  [drive-harddisk-symbolic]  [drive-symbolic]  [drive-harddisk-usb]  [drive-harddisk]  [drive]
      can_mount=1
      can_eject=0
      should_automount=1
      sort_key=gvfs.time_detected_usec.1418402460356605
      Mount(0): backup -> file:///media/doug/backup
        Type: GProxyMount (GProxyVolumeMonitorUDisks2)
        default_location=file:///media/doug/backup
        themed icons:  [drive-harddisk-usb]  [drive-harddisk]  [drive]
        symbolic themed icons:  [drive-harddisk-usb-symbolic]  [drive-harddisk-symbolic]  [drive-symbolic]  [drive-harddisk-usb]  [drive-harddisk]  [drive]
        can_unmount=1
        can_eject=0
        is_shadowed=0
        sort_key=gvfs.time_detected_usec.1418402460358648

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.16.0-25-generic 3.16.0-25.33
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  Uname: Linux 3.16.0-25-generic x86_64
  ApportVersion: 2.15-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  doug       2162 F.... pulseaudio
   /dev/snd/controlC1:  doug       2162 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Dec 12 11:42:32 2014
  InstallationDate: Installed on 2014-11-16 (26 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141114)
  MachineType: LENOVO 20217
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic.efi.signed root=UUID=91a821ed-7160-439b-8519-939faa93bf90 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-25-generic N/A
   linux-backports-modules-3.16.0-25-generic  N/A
   linux-firmware                             1.139
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/18/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 74CN44WW(V3.05)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: VIQY0Y1
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Y510P
  dmi.modalias: dmi:bvnLENOVO:bvr74CN44WW(V3.05):bd09/18/2013:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P:
  dmi.product.name: 20217
  dmi.product.version: Lenovo IdeaPad Y510P
  dmi.sys.vendor: LENOVO

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