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[Jason Heeris <jason.heeris@xxxxxxxxx>]

I've upgraded to a 4.2.0 kernel, Bluetooth isn't even recognised now.

The "Bluetooth: hci0: Failed to load rtl_bt/rtl8723b_fw.bin" line in
dmesg looks suspicious, but I have no idea how to fix it.

I was previously using Troy Tan's firmware, but my understanding is that
reinstalling linux-firmware and a new kernel should completely revert
whatever it does.

Diagnostic info:

----
$ cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS"
Linux tali 4.2.0-32-generic #37~14.04.1-Ubuntu SMP Fri Feb 26 19:15:06 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ dmesg | grep -i blue
[    1.142923] usb 1-7: Product: Bluetooth Radio 
[    5.893475] Bluetooth: Core ver 2.20
[    5.893487] Bluetooth: HCI device and connection manager initialized
[    5.893489] Bluetooth: HCI socket layer initialized
[    5.893491] Bluetooth: L2CAP socket layer initialized
[    5.893495] Bluetooth: SCO socket layer initialized
[    6.043106] Bluetooth: RFCOMM TTY layer initialized
[    6.043114] Bluetooth: RFCOMM socket layer initialized
[    6.043120] Bluetooth: RFCOMM ver 1.11
[    6.048093] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    6.048096] Bluetooth: BNEP filters: protocol multicast
[    6.048101] Bluetooth: BNEP socket layer initialized
[    6.250300] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[    6.250304] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[    6.250332] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_fw.bin failed with error -2
[    6.250334] Bluetooth: hci0: Failed to load rtl_bt/rtl8723b_fw.bin

$  lspci | grep -i real
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5287 (rev 01)
04:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)

----

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1382404

Title:
  10ec:b723 Realtek Bluetooth on 8723BE not working

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  We need to support the realtek bluetooth part that comes with the
  Realtek Wifi MiniPCI Card ( 8723BE )

  the info collect has been done a Clevo W310CZ

  Realtek has provided a driver which has been patched to work on
  trusty/3.13 here :

  https://github.com/lwfinger/rtl8723au_bt/tree/51a20d7c07861cbdd7219e54244bb3e38ba55058

  This driver replace the current btusb driver and thus might cause different dehaviour with other bluetooth cards.
  ---
  ApportVersion: 2.14.1-0ubuntu3.4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  oem        2091 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=3fc39459-32f3-45b1-9121-6b8d0f2b6765
  InstallationDate: Installed on 2014-08-09 (68 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Notebook W310CZ/CZ-T
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic.efi.signed root=UUID=d43834ee-9abe-45da-acfd-3d522bff10c8 ro acpi_osi=Linux acpi_backlight=vendor
  ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-36-generic N/A
   linux-backports-modules-3.13.0-36-generic  N/A
   linux-firmware                             1.127.5
  Tags:  trusty
  Uname: Linux 3.13.0-36-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 12/24/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: W310CZ
  dmi.board.vendor: Notebook
  dmi.board.version: V2.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Notebook
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd12/24/2013:svnNotebook:pnW310CZ/CZ-T:pvrNotApplicable:rvnNotebook:rnW310CZ:rvrV2.0:cvnNotebook:ct10:cvrN/A:
  dmi.product.name: W310CZ/CZ-T
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Notebook

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