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I'm using bluez v5.46 on Ubuntu 17.10 and I cannot connect to a paired bluetooth device.

Here is the output of the bluetoothctl command :

$ bluetoothctl 
[NEW] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
Agent registered
[bluetooth]# scan on
Discovery started
[CHG] Controller 6C:0B:84:27:43:66 Discovering: yes
[NEW] Device FC:58:FA:A1:C2:70 OE-P51
[bluetooth]# trust FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Trusted: yes
Changing FC:58:FA:A1:C2:70 trust succeeded
[bluetooth]# pair FC:58:FA:A1:C2:70 
Attempting to pair with FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[CHG] Device FC:58:FA:A1:C2:70 Paired: yes
Pairing successful
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: no
[CHG] Device FC:58:FA:A1:C2:70 Connected: no
[CHG] Controller 6C:0B:84:27:43:66 Discoverable: no
[bluetooth]# connect FC:58:FA:A1:C2:70 
Attempting to connect to FC:58:FA:A1:C2:70
Failed to connect: org.bluez.Error.Failed

Here is a little bit more info :

$ journalctl -u bluetooth | tail
Mar 29 12:06:01 tensorFlowPHY systemd[1]: Started Bluetooth service.
Mar 29 12:06:01 tensorFlowPHY bluetoothd[1136]: Starting SDP server
Mar 29 12:06:01 tensorFlowPHY bluetoothd[1136]: Bluetooth management interface 1.14 initialized
Mar 29 14:36:12 tensorFlowPHY bluetoothd[1136]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available
Mar 29 14:36:59 tensorFlowPHY bluetoothd[1136]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available

And systemctl says :

$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
   Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-03-30 16:30:15 CEST; 21s ago
     Docs: man:bluetoothd(8)
 Main PID: 1492 (bluetoothd)
   Status: "Running"
    Tasks: 1 (limit: 4915)
   Memory: 1.5M
      CPU: 42ms
   CGroup: /system.slice/bluetooth.service
           └─1492 /usr/lib/bluetooth/bluetoothd

Mar 30 16:30:15 tensorFlowPHY systemd[1]: Starting Bluetooth service...
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Bluetooth daemon 5.46
Mar 30 16:30:15 tensorFlowPHY systemd[1]: Started Bluetooth service.
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Starting SDP server
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Bluetooth management interface 1.14 initialized
Mar 30 16:30:20 tensorFlowPHY bluetoothd[1492]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available
Mar 30 16:30:31 tensorFlowPHY bluetoothd[1492]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available

EDIT 1: I installed one Ubuntu package that was missing : pulseaudio-module-bluetooth and restarted pulseaudio with the command : pulseaudio -k

Now the output of the bluetooth log after connection trial is :

Mar 30 16:36:59 tensorFlowPHY bluetoothd[1492]: Unable to get connect data for Headset Voice gateway: getpeername: Transport endpoint is not connected (107)
Mar 30 16:37:00 tensorFlowPHY bluetoothd[1492]: connect error: Connection refused (111)
Mar 30 16:37:02 tensorFlowPHY bluetoothd[1492]: connect error: Connection refused (111)

Any idea why ?

EDIT 2 : I just restarted Ubuntu as someone asked to do. Still have the same pb.

EDIT 3 : I already have both modules loaded in /etc/pulse/default.pa :

$ egrep "(policy|discover)" /etc/pulse/default.pa
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover

But I cannot find those on the hdd, do I need to install something else ?

EDIT 4: My mistake, I used the locate command. After a sudo updatedb, the locate command is now able to find those 2 files.

EDIT 5 : Here is the pactl output :

$ pactl list modules | grep "Name:"
    Name: module-device-restore
    Name: module-stream-restore
    Name: module-card-restore
    Name: module-augment-properties
    Name: module-switch-on-port-available
    Name: module-udev-detect
    Name: module-alsa-card
    Name: module-alsa-card
    Name: module-bluetooth-policy
    Name: module-bluetooth-discover
    Name: module-bluez5-discover
    Name: module-native-protocol-unix
    Name: module-default-device-restore
    Name: module-rescue-streams
    Name: module-always-sink
    Name: module-intended-roles
    Name: module-suspend-on-idle
    Name: module-console-kit
    Name: module-systemd-login
    Name: module-position-event-sounds
    Name: module-role-cork
    Name: module-filter-heuristics
    Name: module-filter-apply
    Name: module-switch-on-connect
    Name: module-x11-publish
    Name: module-x11-cork-request
    Name: module-x11-xsmp

and the dpkg -l output :

$ dpkg -l | grep blue
ii  bluefish                                  2.2.9-1                                                    amd64        advanced Gtk+ text editor for web and software development
ii  bluefish-data                             2.2.9-1                                                    all          advanced Gtk+ text editor (data)
ii  bluefish-plugins                          2.2.9-1                                                    amd64        advanced Gtk+ text editor (plugins)
ii  blueman                                   2.0.4-1ubuntu3                                             amd64        Graphical bluetooth manager
ii  bluez                                     5.46-0ubuntu3                                              amd64        Bluetooth tools and daemons
ii  bluez-cups                                5.46-0ubuntu3                                              amd64        Bluetooth printer driver for CUPS
ii  bluez-obexd                               5.46-0ubuntu3                                              amd64        bluez obex daemon
ii  bluez-tools                               0.2.0~20140808-5build1                                     amd64        Set of tools to manage Bluetooth devices for linux
ii  gnome-bluetooth                           3.26.1-1                                                   amd64        GNOME Bluetooth tools
ii  indicator-bluetooth                       0.0.6+17.10.20170605-0ubuntu3                              amd64        System bluetooth indicator.
ii  libbluetooth3:amd64                       5.46-0ubuntu3                                              amd64        Library to use the BlueZ Linux Bluetooth stack
ii  libgnome-bluetooth13:amd64                3.26.1-1                                                   amd64        GNOME Bluetooth tools - support library
ii  pulseaudio-module-bluetooth               1:10.0-2ubuntu3.1                                          amd64        Bluetooth module for PulseAudio sound server

EDIT 6: Your solution worked ! So to sum up :

$ bluetoothctl
[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 6C:0B:84:27:43:66 Powered: yes
[bluetooth]# remove FC:58:FA:A1:C2:70
[DEL] Device FC:58:FA:A1:C2:70 OE-P51
Device has been removed
[bluetooth]# exit
Agent unregistered
[DEL] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
$ sudo service bluetooth restart

and finally :

$ bluetoothctl
[NEW] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
Agent registered
[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 6C:0B:84:27:43:66 Powered: yes
[bluetooth]# scan on
Discovery started
[CHG] Controller 6C:0B:84:27:43:66 Discovering: yes
[NEW] Device FC:58:FA:A1:C2:70 OE-P51
[bluetooth]# trust FC:58:FA:A1:C2:70 
[CHG] Device FC:58:FA:A1:C2:70 Trusted: yes
Changing FC:58:FA:A1:C2:70 trust succeeded
[bluetooth]# pair FC:58:FA:A1:C2:70 
Attempting to pair with FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[CHG] Device FC:58:FA:A1:C2:70 Paired: yes
Pairing successful
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: no
[CHG] Device FC:58:FA:A1:C2:70 Connected: no
[bluetooth]# connect FC:58:FA:A1:C2:70 
Attempting to connect to FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
Connection successful
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[OE-P51]#
4

From Arch wiki, Pairing works, but connecting does not, section:

This may be due to the pulseaudio-bluetooth package not being installed. Install it if it missing, then restart pulseaudio.

But pulseaudio-bluetooth package's name is pulseaudio-module-bluetooth on Ubuntu.

So your problem should be solved after installing it:

sudo apt install pulseaudio-module-bluetooth

And after installing this package restart your system to load some pulse audio modules like module-bluetooth-policy and module-bluetooth-discover.

Update:

But if still, you get below message after reboot:

connect error: Connection refused (111)

According to this answer, you should add these lines to /etc/pulse/default.pa file. (If not exist):

load-module module-bluetooth-policy
load-module module-bluetooth-discover

But these lines should be exist by default and after reboot your system, those modules should be loaded.

Update2:

According to this article on Arch wiki:

This may be because you have already paired the device with another operating system using the same bluetooth adapter (e.g., dual-booting). Some devices can't handle multiple pairings associated with the same MAC address (i.e., bluetooth adapter). You can fix this by re-pairing the device

So please re-pair your device with this commands (Or you can use GUI method):

First run:

bluetoothctl

Then use this commands to show paired devices:

devices

And this should be have some output like this:

Device XX:XX:XX:XX:XX:XX Device Name

Then remove paired devices with this command:

remove XX:XX:XX:XX:XX:XX

And restart Bluetooth service:

sudo service bluetooth restart

Then try to pair device again.

  • Hi, thanks for helping me. Please read my EDIT 3 – SebMa Mar 30 '18 at 15:27
  • Please read my EDIT 4 – SebMa Mar 30 '18 at 15:30
  • @SebMa Please add these commands output to your answer pactl list modules | grep "Name:" and dpkg -l | grep blue. Those help us to know which module or package should be loaded or installed. – Ali Razmdideh Mar 30 '18 at 15:36
  • Please find my answer in EDIT 5 – SebMa Mar 30 '18 at 15:42
  • @SebMa I update my answer. Please read update2 – Ali Razmdideh Mar 30 '18 at 15:58

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