I'm trying to add a BlueParrott B-250XT+ bluetooth headset on a Thinkpad X230 tablet running Ubuntu 16.04 with its hardware bluetooth adapter.

The adapter works - meaning it detects/sees the headset. However, when connecting to the headset it initially connects, then this error pops up:

Connection Failed: blueman.bluez.errors.DBusFailedError: Protocol Not available

Afterwards, the Headset disconnects and future connections are impossible - this is some sort of failure/error that causes the bluetooth to be unresponsive afterwards.

I have Pulseaudio installed and I have bluetooth set to load after X11 (this is what got me this far - to the point I can connect). But, as mentioned, the device gets dumped shortly after connection.

  • same problem here. I have a fresh xubuntu installation on my dell latitude e6410 laptop. Trying to connect to JBL Charge3 speaker. The device was paired, but i can connect only to serial port. When Try to connect to audio sink or headset I get Connection Failed: blueman.bluez.errors.DBusFailedError: Protocol not available – Sebastian Widz Jul 22 '16 at 12:10
  • I advice to try on a (live) Ubuntu 15.10 first, so that you can have an idea if the problem is in the BT stack version. Ubuntu 16.04 had a bluetooth stack update which significantly broke BT functionality. – Marcus Aug 8 '16 at 20:45
  • That is a really good idea! I will try some live CDs when I have the time. Thanks, – psedach Aug 18 '16 at 19:52
  • Note that on ArchLinux the package to install is named pulseaudio-bluetooth instead of pulseaudio-module-bluetooth. Just leaving a note here since this is the first result that comes up in the Google search. – xji Mar 3 '18 at 20:13

The solution from this article worked for me:

sudo apt-get install pulseaudio-module-bluetooth
pactl load-module module-bluetooth-discover

Then delete the device from bluetooth devices and pair it again.

If it works, you can consider adding the second command to your startup settings, so that you don't have to run it again after every reboot.

  • 33
    Thanks for the tip - I get a message 'Failure: Module initialization failed' when I do step 2 so it doesn't work for me yet. – psedach Aug 4 '16 at 2:24
  • 5
    Worked for me, but I need to do that every time I reboot... – Korri Nov 7 '16 at 20:24
  • 1
    Worked on Xubuntu 16.04 on Lenovo G580. If you are hearing the sound through the laptop speakers after successfully pairing it, try changing the profile at Volume Control -> Configuration -> Built-in Audio. – lepe Jan 2 '17 at 9:58
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    @psedach, be aware that message will show if one attempts to load the module when it's already loaded. You can test whether it's loaded with pactl list | grep module-bluetooth-discover. – Ian Mackinnon Nov 24 '17 at 9:17
  • 2
    My default pulse configuration file /etc/pulse/default.pa there was already the configuration line in there. .ifexists module-bluetooth-discover.so \n load-module module-bluetooth-discover \n .endif On the next startup, it worked out-of-the-box. (\n added to symbolise linebreaks that were there) – Martin - マーチン Oct 3 '18 at 11:03

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