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BlueZ4.x, headset and oss problem

Bluez-users manuel gysin 2 participants 3 messages Dec 20, 2008 – Dec 24, 2008 Bluetooth drivers

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Hello,

I've manged to get my headset running with BlueZ4. Sound and Voice is working very well with Skype.

Now I tried to use my headset with teamspeak. I tried to run it with aoss teamspeak, but the problem is now I have no /dev/dspx device for the headset.

Is there a way to solve this?

Greets and thanks

Manuel

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#1 lore raw

Hi Manuel,

Quoted 6 lines

I've manged to get my headset running with BlueZ4. Sound and Voice is working very well with Skype.

Now I tried to use my headset with teamspeak. I tried to run it with aoss teamspeak, but the problem is now I have no /dev/dspx device for the headset.

I don't even have any idea what /dev/dspx is used for. Remember that all Bluetooth audio is virtual and lives in userspace. So if you require a kernel device node, then the kernel (meaning ALSA) has to do some magic here.

Regards

Marcel

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#2 lore raw

Hi Marcel,

Quoted 9 lines

Hi Manuel,

Quoted 6 lines

I've manged to get my headset running with BlueZ4. Sound and Voice is working very well with Skype.

Now I tried to use my headset with teamspeak. I tried to run it with aoss teamspeak, but the problem is now I have no /dev/dspx device for the headset.

Quoted 11 lines

I don't even have any idea what /dev/dspx is used for. Remember that all Bluetooth audio is virtual and lives in userspace. So if you require a kernel device node, then the kernel (meaning ALSA) has to do some magic here.

Regards

Marcel

/dev/dspx should be an oss device like /dev/dsp0.
In the old version of BlueZ there was a plugin called snd-bt-sco and created an entry under /proc/asounds/cards.

With that the oss emulation created a dsp-device of the alsa device. But the wiki tells that this is no longer needed.

I use a 2.6.26 kernel with "ALSA for SoC audio support" (I know SoC is not ScO, I think this is not what I'm need).

My problem is now, that I can't use the aoss command cause there is no card entry for the headset and so no /dev/dspx will be created.

I searched around the internet but find nothing about it. So I don't know if it a mistake from my side or bluez does not have such a feature.

The man page of aoss told me that I can "fake" such e device with
"pcm.dsp0 { type plug slave.pcm "headset" }"
in ~/.asoundrc.
But this will not work, there is no such routing to the bluetooth device.

Regards
Manuel

PS: I hope my English is not to bad to understand

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