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

[udayparida]

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.

[Jeremy (wa113y3s)]

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

[udayparida (udayparida)]

Thanks Jeremy. Disappointed to learn that to get the bluetooth working, I will have to wait for the next stable version. Are there absolutely no options to get this working?

[Jeremy (wa113y3s)]

You can download from Larry Fingers github site, you will need the rtlwifi-new and rtl8723au_bt, troy branch to have bluetooth

[udayparida (udayparida)]

I tried the above suggestion. Now I do not see the bluetooth icon any more. When I open the bluetooth manager, it shows "No Bluetooth adapters found".