linux-kernel - Re: Linux 3.0-rc4: regression reconnecting bluetooth headset (A2DP fails)

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Date:	Tue, 28 Jun 2011 15:21:17 -0300
From:	"Gustavo F. Padovan" <padovan@...fusion.mobi>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	linux-bluetooth@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 3.0-rc4: regression reconnecting bluetooth headset (A2DP
 fails)

Hi Jeremy,

* Jeremy Fitzhardinge <jeremy@...p.org> [2011-06-23 17:29:41 -0700]:

> I have a Nokia BH-905i headset.  With a stock F15 kernel, it all works
> well. With current linux-2.6.git, it fails to reconnect properly.
> 
> On connection, the headphones only beep once, whereas they normally beep
> twice; I think this is one beep per profile, and its only connecting HSP
> and failing A2DP.  In the sound control panel, it either comes up with
> "profile: off" or with the HSP/HFP (Telephony) profile rather than A2DP,
> and it fails to switch if I try to change profiles via the sound control
> panel.
> 
> However, if I re-pair the device from scratch each time I use it, it
> connects properly and it all works fine.
> 
> pactl list shows:
> 
> Card #2
> 	Name: bluez_card.00_0B_E4_A6_6C_0D
> 	Driver: module-bluetooth-device.c
> 	Owner Module: 23
> 	Properties:
> 		device.description = "Nokia BH-905i"
> 		device.string = "00:0B:E4:A6:6C:0D"
> 		device.api = "bluez"
> 		device.class = "sound"
> 		device.bus = "bluetooth"
> 		device.form_factor = "headset"
> 		bluez.path = "/org/bluez/843/hci0/dev_00_0B_E4_A6_6C_0D"
> 		bluez.class = "0x240404"
> 		bluez.name = "Nokia BH-905i"
> 		device.icon_name = "audio-headset-bluetooth"
> 		device.intended_roles = "phone"
> 	Profiles:
> 		a2dp: High Fidelity Playback (A2DP) (sinks: 1, sources: 0, priority. 10)
> 		hsp: Telephony Duplex (HSP/HFP) (sinks: 1, sources: 1, priority. 20)
> 		off: Off (sinks: 0, sources: 0, priority. 0)
> 	Active Profile: hsp
> 
> If I try to switch profiles on the command line it says:
> $ pactl set-card-profile 2 a2dp
> Failure: Input/Output error
> 
> and /var/log/messages shows:
> module-bluetooth-device.c: A2DP is not connected, refused to switch profile
> 
> Why isn't A2DP connecting?  How can I debug this further?

Can you send the output of hcidump with F15 kernel and with linux-2.6.git
kernel?

	Gustavo
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