Re: [Bluez-devel] bluetooth headset not working

[Kevin Fenzi <kevin@scrye.com>]

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On Fri, 19 Oct 2007 09:03:43 -0700 (PDT)
Jim Carter <jimc@math.ucla.edu> wrote:

> On Thu, 18 Oct 2007, Kevin Fenzi wrote:
> 
> > On Thu, 18 Oct 2007 10:59:50 -0700 (PDT)
> > Jim Carter <jimc@math.ucla.edu> wrote:
> > > aplay or mplayer are talking to the ALSA device that uses the A2DP
> > > profile. The phone app needs to use the device with the HFP
> > > profile.
> > 
> > Humm... do all headsets do A2DP? I thought mine did not. 
> 
> The ones with 2 earpieces and a mass of about 100 grams invariably
> (?) do A2DP which transmits stereo at 44100 Hz or 48000 Hz,
> compressed with the SBC codec.  The single-ear ones with a mass of
> about 20 grams invariably (?) do HSP/HFP, monaural at 8000 Hz, I
> think uncompressed.  That would be your Jabra BT 250v.  Some but not
> all of the music headsets can switch protocols and have call control
> buttons for HFP; these are advertised as "works with Skype".

Right. Thats my understanding as well. 

> So the Jabra is capable of doing the HSP protocol, and when the
> message says the protocol is "not available", the problem is likely
> not in the headset.  Not likely that the headset is broken or has
> buggy firmware, but just for paranoia, it would be a good data point
> if the same message were seen with a different headset.  

I can duplicate it with another headset here later... 

> I've seen a similar message when I didn't have
> bluetoothd-service-audio configured to autostart and forgot to start
> it manually.  Do you have the corresponding protocol/profile daemon
> running?  I don't have my laptop handy to look up the name of this
> daemon but I think it's bluetoothd-service-sco.  This is in
> bluez-utils-3.19 (3.20 is latest; probably came in at 3.16.)

bluetoothd-service-audio?

Yeah, seems to run fine, but makes no difference in the output. ;( 

> Unfortunately that's about the limit of my expertise, since I haven't 
> messed with the HSP/HFP feature of the Motorola HT-820 that I have.

Bummer. Thanks for helping out!

If anyone else has any ideas I would love to get this working...

kevin


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