A lead on the bluetooth audio suspend problem (QtMoko v26)

Radek Polak psonek2 at seznam.cz
Thu Dec 2 19:39:11 CET 2010

Brian Kemp wrote:
> As far as I can remember there is an issue with bluetooth audio, where
> the FreeRunner user cannot hear audio over the bluetooth
> headset/handsfree device on outgoing calls until one incoming call has
> been received.

Yup, i remember :)

> I'm using QtMoko v26 and once in a while I can get this to happen.
> I have found a workaround, by accident:
> After pairing / connecting your bluetooth headset (handsfree in my
> case), go to the Profile Editor and play your selected ringtone or alarm
> tone (go to select a new ringtone, and let it play once.)
> Bluetooth audio then works for me for outgoing calls.
> I'm guessing the fact that the phone rings for incoming calls is what is
> making it work. :)
> Hypothesis: Some sort of initialization routine is taking place when
> audio is played over the sidetone.

The problem was alsa scenario switching.

> I don't have the skills to patch, but if this helps anyone, you're
> welcome. :)

Maybe you can enable logging for audio states switching. It could be obvious 
then where is the problem if it alsa state switching is wrong.



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