Using BT Headset (a2dp) is not possible: Bluetooth: re-auth of legacy device is not possible.

[aanno]

In Ubuntu 14.04/trusty the use of my BT headset (an old Motorola HT 820) is not possible any more. Pairing is successful, however I always find the following in /var/log/syslog when I trying to connect to the A2DP service:

May 17 16:09:58 silberfisch2 kernel: [25385.859723] input: 00:07:A4:B5:F1:5E as /devices/virtual/input/input22
May 17 16:12:18 silberfisch2 kernel: [25526.017139] Bluetooth: re-auth of legacy device is not possible.

This is a regression i.r.t. older version of Ubuntu, for example I *was* able to use the device with Ubuntu 13.10/saucy.

[aanno (thomas-pasch)]

As I reported in bug #1283003, the problem could be circumvented with:

> pactl load-module module-bluetooth-discover

However bug #1283003 does NOT mention 're-auth of legacy device is not possible' in any way.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rolf Leggewie (r0lf)]

Thomas, thank you for this report and thank you for the research leading you to find a solution in bug 1283003.

I hope you don't mind me unduping this ticket for the moment. Bug 1283003 lumps together too many different aspects to be actionable. I believe I experienced exactly the same issue and that's the one I'd like to get a fix for into Ubuntu so that things work out of the box.

Here's what I know about the situation at the moment. "pactl load-module module-bluetooth-discover" resolved the situation for me just like it did for you. I am not yet sure if that will survive a reboot or if I will need to reissue the command. Bug 1283003 comment 15 mentioned left-over files in /etc/bluetooth that once they were removed resolved the situation. I believe I can also confirm that for my case. Is this the same for you? If it is, I'd like for this ticket to focus on those left-over files and get a fix committed to Utopic and Trusty.

Have you ever tried a Trusty or Utopic live CD and experienced the same issue?

[pavel bursa (bursap)]

Yes, dmesg output:

 3898.856039] usb 5-1: new full-speed USB device number 2 using uhci_hcd
[ 3899.031043] usb 5-1: New USB device found, idVendor=0a5c, idProduct=2101
[ 3899.031049] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3899.031053] usb 5-1: Product: Jabra - A320s
[ 3899.031056] usb 5-1: Manufacturer: Broadcom Corp
[ 3899.078330] usbcore: registered new interface driver btusb
[ 3899.187424] Bluetooth: RFCOMM TTY layer initialized
[ 3899.187438] Bluetooth: RFCOMM socket layer initialized
[ 3899.187445] Bluetooth: RFCOMM ver 1.11
[ 3910.796054] Bluetooth: re-auth of legacy device is not possible.
[ 3911.044247] input: 00:13:17:71:8B:82 as /devices/virtual/input/input20
[ 4097.803103] Bluetooth: re-auth of legacy device is not possible.
[ 4098.348243] input: 00:13:17:71:8B:82 as /devices/virtual/input/input21
[ 0

[pavel bursa (bursap)]

and moreover: pactl did not work

root@tahr:/home/pavel# pactl load-module module-bluetooth-discover
Failure: Module initialization failed

[Daniel van Vugt (vanvugt)]

Ubuntu 14.04 reached end of standard support in April 2019:

  https://wiki.ubuntu.com/Releases

If you would like to continue with free support then please update to a
newer Ubuntu version and tell us if the problem still occurs.

If you would like to continue with Ubuntu 14.04 then there is a paid
support option detailed at https://www.ubuntu.com/esm