[Bluez-devel] Re: Again: Problems with Dongle, Headset or btsco

Sebastian Roth
2005-01-22T15:40:11Z

Hi Ben,

> ok. Is it possible that the SCO Part of this dongle is somehow broken?
> Obviously the RFCOMM Part is working fine.
I've had problems with a Anycom 220 dongle (also Silicon Wave chip) too.
RFCOMM seemed to work but no sound. hcidump showed a flow of sco packets
with handle 0. Can't get it working till now so I decided to use another
one.

> Question: when connected via btsco and trying to play
> some sound with:
> aplay -D plughw:Headset soundfile
> Does soundfile need to have the correct samplerate,frequency,etc
> as the Headset?
IMHO, no.

> unfortunately
> arecord -D plughw:Headset z1.out
> Recording WAVE 'z1.out' : Unsigned 8 bit, Rate 8000 Hz, Mono
>
> only creates a 44 Byte big file z1.out with the header but
> no content
For older versions of arecord this is the usual behaviour. Update
alsa-tools or try the commandline switch '-d' (man arecord).

Best regards,

Sebastian