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[Pilot6 <1568590@xxxxxxxxxxxxxxxxxx>]

Since this device has been already tested in
https://bugs.launchpad.net/bugs/1552925

I added the tag.

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https://bugs.launchpad.net/bugs/1568590

Title:
  Bluetooth stopped working

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi,

  I've recently install kUbuntu 15.10, and bluetooth worked out of the box. But at some point (probably after installing updates)
  it is no longer detecting (when scanning) any devices.

  I have found a similar bug report here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552925,
  but the package linked there did not work (probably due to me using ath9k, not ath3k module) - the bluetooth card was not detected, and in dmesg were messages about failing to load firmware.

  $ lsusb
  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 003: ID 13d3:3472 IMC Networks 
  Bus 001 Device 002: ID 04f2:b52b Chicony Electronics Co., Ltd                                                                                                                                                     
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub                                                                                                                                                   

  $  uname -a
  Linux AsusX 4.2.0-35-generic #40-Ubuntu SMP Tue Mar 15 22:15:45 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  $ inxi -N
  Network:   Card-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller driver: r8169
             Card-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter driver: ath9k

  $ usb-devices | awk '/3472/' RS=
  T:  Bus=01 Lev=01 Prnt=01 Port=07 Cnt=02 Dev#=  3 Spd=12  MxCh= 0
  D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
  P:  Vendor=13d3 ProdID=3472 Rev=00.01
  C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
  I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
  I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-35-generic 4.2.0-35.40
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  razumov    1127 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sun Apr 10 21:14:08 2016
  InstallationDate: Installed on 2016-04-09 (1 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 13d3:3472 IMC Networks 
   Bus 001 Device 002: ID 04f2:b52b Chicony Electronics Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. X756UJ
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic.efi.signed root=UUID=288fe531-b2a3-428d-aa05-95c477ee6833 ro quiet splash acpi_osi= vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-35-generic N/A
   linux-backports-modules-4.2.0-35-generic  N/A
   linux-firmware                            1.149.3
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/23/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: X756UJ.206
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: X756UJ
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX756UJ.206:bd10/23/2015:svnASUSTeKCOMPUTERINC.:pnX756UJ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX756UJ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: X756UJ
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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