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[Julian Lam <1221995@xxxxxxxxxxxxxxxxxx>]

This bug affects me, and I can attempt patches/fixes if any are still
outstanding?

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https://bugs.launchpad.net/bugs/1221995

Title:
  0a12:0001 Bluetooth Dongle (Cambridge Silicon Radio, Ltd) doesn't work
  with 3.11 or 3.13 kernels

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  SRU Justification:

  Impact: Bluetooth device stopped working. Device support regression.
  Fix: Upstream, f9f462faa02777f497eb25255683a94e0c054de6
  Testcase: Comment #10

  Original Description:

  Bluetooth device stopped working after upgrading ubuntu to 13.10.

  ~$ lsusb:
   Bus 001 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

  ~$ hciconfig
  hci0:	Type: BR/EDR  Bus: USB
   BD Address: 00:1B:10:00:0F:46  ACL MTU: 1017:8  SCO MTU: 64:0
   DOWN
   RX bytes:457 acl:0 sco:0 events:16 errors:0
   TX bytes:68 acl:0 sco:0 commands:16 errors:0
  ~$ hcitool dev
  Devices:

  device simply doesnt appear on bluetooth manager. blueman UI is
  broken.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-4-generic 3.11.0-4.9
  ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
  Uname: Linux 3.11.0-4-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jorge      1954 F.... pulseaudio
   /dev/snd/controlC0:  jorge      1954 F.... pulseaudio
  Date: Fri Sep  6 22:32:45 2013
  HibernationDevice: RESUME=UUID=707ce71f-40a6-4fc3-b0a1-d24329b1c781
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  MachineType: MEGAWARE MW-H61M-2H
  MarkForUpload: True
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-4-generic root=UUID=3480d68a-ee68-452e-b349-a2398ce3da52 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-4-generic N/A
   linux-backports-modules-3.11.0-4-generic  N/A
   linux-firmware                            1.113
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-08-23 (15 days ago)
  dmi.bios.date: 08/28/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F5 MW
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: MW-H61M-2H
  dmi.board.vendor: MEGAWARE
  dmi.board.version: v1.3 - 17/07/2012 - MWX
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MEGAWARE
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF5MW:bd08/28/2012:svnMEGAWARE:pnMW-H61M-2H:pvrv1.3-17/07/2012-MWX:rvnMEGAWARE:rnMW-H61M-2H:rvrv1.3-17/07/2012-MWX:cvnMEGAWARE:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: MW-H61M-2H
  dmi.product.version: v1.3 - 17/07/2012 - MWX
  dmi.sys.vendor: MEGAWARE

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