Bug 75351

Summary:	Can't connect to AD2P profiles of some bluetooth headsets
Product:	Drivers	Reporter:	Marcin Stefański (mstefanski1987)
Component:	Bluetooth	Assignee:	linux-bluetooth (linux-bluetooth)
Status:	NEW ---
Severity:	normal	CC:	johan.hedberg, nadia.yvette.chambers, sander
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.13	Subsystem:
Regression:	No	Bisected commit-id:

Description Marcin Stefański 2014-05-03 08:24:00 UTC

There seems to be a problem connecting with AD2P profile of some bluetooth headsets.

kernel: [ 2013.010319] Bluetooth: re-auth of legacy device is not possible.
bluetoothd[716]: Protocol not supported (93)

Some of the devices affected: Motorola S805 BT, Medion MD86751

This bug was originally discovered here:

https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1283003?comments=all

Comment 1 Sander van Grieken 2014-07-03 10:58:15 UTC

Likely related:

https://lists.debian.org/debian-kernel/2014/02/msg00235.html

This is a HSP profile headset, not a A2DP one. Also the first kernel the problem manifests is 3.12

Comment 2 Johan Hedberg 2014-07-03 12:39:24 UTC

"Bluetooth: re-auth of legacy device is not possible." sounds like a kernel bug that was fixed quite recently. It'd be good if you could check with the latest bluetooth-next kernel whether the problem persists (however I do think the patch has already made it to latest 3.16-rc release as well).

Comment 3 Sander van Grieken 2014-07-03 15:14:29 UTC

No, just tried a build of bluetooth-next master, but it does not work.
There's no entries like re-auth or protocol not supported appearing in the log though.

Comment 4 Nadia Yvette Chambers 2014-07-26 20:45:53 UTC

This used to break in Ubuntu's 3.11.0-12 with a Logitech h800 for me, but is now confirmed to work with the same Logitech h800 on 3.16.0-rc6.