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[Jeremy <wa113y3s@xxxxxxxxx>]

Wait for 16.04 and it will likely work.  The firmware from the launchpad
answer site didn't cause the errors in dmesg as the firmware didn't get
loaded because your bluetooth is Realtek and the firmware would only get
loaded for the correct Broadcom bluetooth device

I actually think this is fixed in Ubuntu 15.10 with the Realtek firmware
and 4.2 kernel

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https://bugs.launchpad.net/bugs/1545927

Title:
  Bluetooth not functioning on Ubuntu 14.04 running on HP 15-ac122tu

Status in bluez package in Ubuntu:
  New

Bug description:
  Ubuntu Version: 14.04 LTS (installed on the system)
  PC Model: HP 15-ac122tu

  The output of the command is mentioned below, which should give the
  current status of the computer.

  naman@naman-HP-Notebook:~$ lsb_release -a; uname -a; lsusb; dmesg | grep -i blue
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 14.04.3 LTS
  Release:	14.04
  Codename:	trusty
  Linux naman-HP-Notebook 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  Bus 003 Device 002: ID 8087:8001 Intel Corp. 
  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 003: ID 05c8:0382 Cheng Uei Precision Industry Co., Ltd (Foxlink) 
  Bus 001 Device 002: ID 0bda:b006 Realtek Semiconductor Corp. 
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  [    2.907648] usb 1-4: Product: Bluetooth Radio 
  [   13.293699] Bluetooth: Core ver 2.20
  [   13.293721] Bluetooth: HCI device and connection manager initialized
  [   13.293725] Bluetooth: HCI socket layer initialized
  [   13.293730] Bluetooth: L2CAP socket layer initialized
  [   13.293741] Bluetooth: SCO socket layer initialized
  [   14.808490] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [   14.808495] Bluetooth: BNEP filters: protocol multicast
  [   14.808499] Bluetooth: BNEP socket layer initialized
  [   14.808546] Bluetooth: RFCOMM TTY layer initialized
  [   14.808552] Bluetooth: RFCOMM socket layer initialized
  [   14.808558] Bluetooth: RFCOMM ver 1.11
  [  363.779480] Bluetooth: hci0 urb ffff8801568cdd80 failed to resubmit (2)

  The above is the output after I tried the solution proposed by jeremy (wa113y3s) for a bug reported at the following link.
  https://answers.launchpad.net/ubuntu/+source/bluez/+question/267253

  The output of dmseg | tail is the following.
  naman@naman-HP-Notebook:~$ dmesg | tail
  [   62.006766] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.007275] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.007784] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.008293] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.015098] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.016109] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [   62.016619] [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt lied (SDE)!
  [  363.779375] usbcore: deregistering interface driver btusb
  [  363.779480] Bluetooth: hci0 urb ffff8801568cdd80 failed to resubmit (2)
  [  372.324110] usbcore: registered new interface driver btusb

  Appreciate any help here.

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