Re: Bluetooth Headset connection issue with PulseAudio

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Dear Vladimir Botka,
Hi All,
I am trying to connect my bluetooth headset to my Linux box using
Pulse Audio. I am able to successfully run the pactl sink command
but when I look at the debug log I could see the headset is
connecting and disconnects immediately due to an error returning
unknown connection handle in the SCO packet.

My test configurations:
Linux Kernel version : 2.6.30
Bluez version : 4.32
Pulse audio version:  0.9.14
Linux Distro: Ubuntu Jaunty 9.04

My BT Dongle: Gigabyte BTD02
HCI Ver: 1.2 (0x2) HCI Rev: 0x639 LMP Ver: 1.2 (0x2) LMP Subver:
0x639 Manufacturer: Cambridge Silicon Radio (10)

Pulse audio, pactl sink command output is as below:
btaudio~$ sudo pactl load-module module-alsa-sink
device=btheadsetsudo: unable to resolve host btaudio
15

I am getting the following error in the kernel message:
hci_scodata_packet: hci0 SCO packet for unknown connection handle
45

Please find the log of "bluetoothd -nd":
bluetoothd[4127]: Unix client disconnected (fd=13)
bluetoothd[4127]: State changed /org/bluez/4127/hci0/dev_AE_2D_CC_AA_BB_14: HEADSET_STATE_PLAYING
-> HEADSET_STATE_CONNECTED
bluetoothd[4127]: No matching connection found for handle 45
bluetoothd[4127]: telephony-dummy: device 0x2064d398 disconnected
bluetoothd[4127]: State changed /org/bluez/4127/hci0/dev_AE_2D_CC_AA_BB_14:
HEADSET_STATE_CONNECTED -> HEADSET_STATE_DISCONNECTED

My asoundrc file:
btaudio:~$ more .asoundrc
pcm.btheadset {
type bluetooth
device AE:2D:CC:AA:BB:14
profile "auto"
}

Anyone has come across this similar issue? Any suggestions.
There are 2 kinds of bluetooth modules in pulseaudio. The 1st one
sends the audio via alsa-bluetooth and the the 2nd one are the
native pulseaudio bluetooth modules. None of them are working
AFAIK.

But, there is the possibility to use the bluetooth headphones and
be able to use the pulseaudio. Use the following .asoundrc

# cat ~/.asoundrc
       pcm.!default {
               type pulse
       }
       ctl.!default {
               type pulse
       }
       pcm.btheadset {
               type bluetooth
               device "00:13:17:72:CD:FF"
       }

Thus all default alsa output is redirected to the pulseaudio and
the bluetooth headphones can be used with the applications which
allow to select specific device (btheadset in this case). You can
find more details here [1].
Thanks for your reply and the details on the asoundrc file.
We could hear only some sound at regular intervals. There is no
Music heared.

Is there anything to do the version interoperability?

My test configurations:
Linux Kernel version : 2.6.30
Bluez version : 4.32
Pulse audio version:  0.9.14
Linux Distro: Ubuntu Jaunty 9.04

Does the following error cause the issue that I am facing? bluetoothd[3977]: audio handle_uuid: server not enabled for
0000111e-0000-1000-8000-00805f9b34fb (0x111e)

Yes. This could be a problem. The described solution was tested on
openSUSE 11.1 with the following versions.

Linux Kernel version : 2.6.27
Bluez version : 4.42
Pulse audio version:  0.9.14

But in this case the module which actually sends the sound to the
bluetooth headset is bluez-alsa-4.42-67.1 .

Have fun,
Thanks for your reply.

Do you have any idea what does the following message indicates, Any
idea?

*bluetoothd[3977]: audio handle_uuid: server not enabled for
0000111e-0000-1000-8000-00805f9b34fb (0x111e)*

Anything I need to enable before testing audio. Can you share your
audio.conf file?

...
bluetoothd[9663]: audio.conf: Key file does not have key 'AutoConnect'
bluetoothd[9663]: audio.conf: Key file does not have key
...
HEADSET_STATE_PLAY_IN_PROGRESS -> HEADSET_STATE_PLAYING
bluetoothd[9663]: Unix client disconnected (fd=18)
bluetoothd[9663]: State changed /org/bluez/9663/hci0/dev_AE_2D_CC_AA_BB_14: HEADSET_STATE_PLAYING -> HEADSET_STATE_CONNECTED
bluetoothd[9663]: client_free(0x204a2270)
*bluetoothd[9663]: No matching connection found for handle 45*
bluetoothd[9663]: telephony-dummy: device 0x204ba490 disconnected
bluetoothd[9663]: State changed /org/bluez/9663/hci0/dev_AE_2D_CC_AA_BB_14: HEADSET_STATE_CONNECTED
-> HEADSET_STATE_DISCONNECTED

There is no audio.conf in my /etc tree. The
bluez-audio is configured here /etc/alsa/bluetooth.conf (attached).
I have same bluetooth.conf file.
Tarball /etc/bluetooth is attached too.
I had one audio.conf in the /etc/bluetooth which I deleted and tried. The device connects
in HFP and only noise we could hear.
But, telephony-dummy is a2dp
device ? Try with other a2dp (stereo) headphone. Maybe [1] can tell
more. And try a simple "aplay -D bths foo.wav" for testing (where bths
is your entry in ~/.aosundrc.

[1] http://wiki.bluez.org/wiki/HOWTO/AudioDevices
I do not have a stereo headphone. I have a mono headset that supports HSP. When I play
using aplay -D btheadset <music file> I get the following error.
/Playing raw data 'Nagada Nagada.mp3' : Unsigned 8 bit, Rate 8000 Hz, Mono
aplay: set_params:961: Sample format non available

/But when I played using the following option
aplay -D plug:btheadset <music file>
the file is playing, I hear only noise.

Thanks & Regards,
Benjamin

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