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[Nathan Grennan <ubuntuone@xxxxxxxxxxxxx>]

I am experiencing the same issue my Lenovo P50. It doesn't work most of
the time at boot.

workaround:
rmmod btusb ; modprobe btusb

kernel messages when it fails:
[    8.523061] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[    8.525271] Bluetooth: hci0: Found device firmware: intel/ibt-11-5.sfi
[    8.532355] Bluetooth: hci0: Failed to send firmware data (-38)
[   10.608812] Bluetooth: hci0: Reading Intel version information failed (-110)
[   10.612778] Bluetooth: hci0 command tx timeout

kernel messages post reload of the btusb module:
[  712.576916] Bluetooth: hci0: Firmware revision 0.0 build 90 week 25 2015
[  767.110199] Bluetooth: hci0 urb ffff88073c4c0540 failed to resubmit (2)

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https://bugs.launchpad.net/bugs/1553694

Title:
  Lenovo Y700-17ISK: Bluetooth issues

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After installing and updating Xenial, dmesg notes:
  [    2.253211] Bluetooth: hci0: Failed to send firmware data (-38)
  [    4.250058] Bluetooth: hci0 command 0xfc05 tx timeout
  [    9.135505] Bluetooth: hci0: Reading Intel version information failed (-19)
  [   10.926411] Bluetooth: hci0: Setting Intel event mask failed (-16)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-10-generic 4.4.0-10.25
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  aljosa     1776 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Mar  6 11:31:12 2016
  HibernationDevice: RESUME=UUID=ac022671-63df-40ae-bffe-66fff3b35125
  InstallationDate: Installed on 2016-03-05 (0 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160304)
  MachineType: LENOVO 80Q0
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-10-generic.efi.signed root=UUID=aa4325c4-4b4c-4372-b8ca-a66c3e5b2aa6 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-10-generic N/A
   linux-backports-modules-4.4.0-10-generic  N/A
   linux-firmware                            1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/31/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: CDCN30WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Allsparks 7A
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ideapad Y700-17ISK
  dmi.modalias: dmi:bvnLENOVO:bvrCDCN30WW:bd01/31/2016:svnLENOVO:pn80Q0:pvrLenovoideapadY700-17ISK:rvnLENOVO:rnAllsparks7A:rvrNODPK:cvnLENOVO:ct10:cvrLenovoideapadY700-17ISK:
  dmi.product.name: 80Q0
  dmi.product.version: Lenovo ideapad Y700-17ISK
  dmi.sys.vendor: LENOVO

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