[Bluez-devel] btsco not working with 3Com 3CREB96 and SE HBH-602

[Tom K <tomk@runbox.com>]

First post here, not a developer, but I'm posting here as advised on the 
bluetooth-alsa site.

I have a 3Com 3CREB96 USB dongle and a SonyEricsson HBH-602 headset. I 
have the following installed on the laptop:

kernel 2.6.15
bluez-libs 2.25
bluez-utils 2.25
bluez-hcidump 1.29
btsco 0.41

Bluetooth daemons are running, snd-bt-sco is loaded, hci0 is up, with 
the voice 0x0060 setting. The devices are paired successfully. I now run 
btsco -v A1:B2:C3:D4:E5:F6, and get the following response:

btsco v0.41
Device is 1:0
Voice setting: 0x0060
RFCOMM channel 1 connected
recieved AT*ECBP=?
recieved AT+CLIP=1
recieved AT+CSCS="UTF-8"
recieved AT+CLAN?

In another terminal, I try aplay -B 1000000 -D plughw:Headset test.wav, 
and the following is added in the btsco terminal:

i/o needed: connecting sco...
Can't connect SCO audio channel
: Connection refused

I shut down btsco, and after nearly 30 seconds, I hear a single beep in 
the headset. I run btsco again as above, with the same initial response, 
and run aplay again. This time, the sound file plays through the 
headset, and btsco shows the following:

i/o needed: connecting sco...
connected SCO channel
Done setting sco fd
recieved AT+VGS=12
Sending up speaker change 12
speaker volume: 12 mic volume: 11
driver is not in use
disconnected SCO channel
RFCOMM channel lost

btsco then shuts itself down.

All the above is consistently reproducable. Also, the same responses are 
seen if arecord is used instead of aplay, except of course that a file 
is recorded instead of played on the second attempt.

About a year ago, I had the same headset working correctly with btsco 
and a 3Com BT PCMCIA card, which I unfortunately can no longer use.

If more info is required - hcidump, logs, etc - let me know. I am aware 
that this is a dev list, so I will understand completely if nobody is 
interested.

All the best
Tom K.


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