[Bluez-users] headset via bluetooth-headset not fully working

[Bluez-users] headset via bluetooth-headset not fully working

[David Elze]

Hey, 

I'm running Debian unstable and want to do some VoIP stuff with my
HBH-PV700 (Sony Ericsson) headset over a standard bluetooth dongle
(usb).

Pretty everything works as it should: 
1. I can pair the headset correctly (hcitool, gnome bluetooth 
   manager and friends) [1]
2. I can start the headsetd via 'headsetd -n' to get its output
3. When I run 
   'aplay -Dplug:headset /usr/share/sounds/alsa/Front_Center.wav'
   the headsets does a beep, I can hear some silent noise (nothing
   like the expected sound, only background noise that is slightly
   louder than the headset normally is if there is no aplay involved)
   but not the expected sound and headsetd says [2] whereas my 
   .asoundrc looks like [3]

So everything seems to be fine: the connection does work, if I send some
sound to the headset-alsa-device it recognizes that, beeps and starts to
'sound' different then before but I just hear no sound. I increased all
audio levels via alsamixer, I put the usb-stick into another usb-port
(because I read something about problems with certain usb-hubs and
sco-like stuff) and did some strace'ing and aplay -verbose but there
were absolutely no error messages.

Maybe you guys have an idea or at least some rtfm-hint because I don't
know what to do anymore. The headset itself is working correctly, I
tested it twice with my normal cellphone.

Thanks for any hint :-)

Greetings, David

[1] 
BD Address:  xx:yy... (removed for obvious reasons)
Device Name: HBH-PV700
LMP Version: 1.1 (0x1) LMP Subversion: 0x9240
Manufacturer: Philips Semiconductors (37)
Features: 0xbc 0x28 0x01 0x00 0x00 0x00 0x00 0x00
<encryption> <slot offset> <timing accuracy> <role switch> 
<sniff mode> <SCO link> <HV3 packets> <CVSD> 

[2] 
headsetd[3109]: Configuration phase ended: target bdaddr is xx:yy:...,
timeout is 6000 ms
headsetd[3109]: Changing state: Idle-->Paging
headsetd[3109]: Changing state: Paging-->Connecting
headsetd[3109]: Changing state: Connecting-->Ready
headsetd[3109]: Changing state: Ready-->Opening
headsetd[3109]: SCO channel opened handle=0x002b mtu=64
headsetd[3109]: Changing state: Opening-->Streaming
headsetd[3109]: Appli closed socket
headsetd[3109]: Changing state: Streaming-->Zombie
headsetd[3109]: Nobody uses SCO channel anymore, closing it.
headsetd[3109]: Changing state: Zombie-->Connected

[3]
pcm.headset {
        @args [BDADDR TIMEOUT]
        @args.BDADDR {
                type string
                default "xx:yy:..."
        }
        @args.TIMEOUT {
                type integer
                default 6000
        }
        type        sco
        bdaddr      $BDADDR
        timeout     $TIMEOUT
}
ctl.headset {
        type sco
}



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Re: [Bluez-users] headset via bluetooth-headset not fully working

[maho+bluez]

David Elze wrote:
> Hey, 
>
> I'm running Debian unstable and want to do some VoIP stuff with my
> HBH-PV700 (Sony Ericsson) headset over a standard bluetooth dongle
> (usb).
>
> Pretty everything works as it should: 
> 1. I can pair the headset correctly (hcitool, gnome bluetooth 
>    manager and friends) [1]
> 2. I can start the headsetd via 'headsetd -n' to get its output
> 3. When I run 
>    'aplay -Dplug:headset /usr/share/sounds/alsa/Front_Center.wav'
>    the headsets does a beep, I can hear some silent noise (nothing
>    like the expected sound, only background noise that is slightly
>    louder than the headset normally is if there is no aplay involved)
>    but not the expected sound and headsetd says [2] whereas my 
>    .asoundrc looks like [3]
>   
[...]
What aplay -v -Dplug:headset /usr/share/sounds/alsa/Front_Center.wav says?

Doesn't it say that "Prorotocol not available (92)" ?

I have very similar problems (see
http://article.gmane.org/gmane.linux.bluez.user/12981), but no solution
yet, but my aplay gives that error #92.

I suspect that it's hardware issue, but I don't know if it's my headset
(moto h500), usb dongle (some broadcom), or something else?

regards

maHo



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Re: [Bluez-users] headset via bluetooth-headset not fully working

[David Elze]

Hey maHo, 

Am Sonntag, den 04.11.2007, 18:12 +0100 schrieb maho+bluez:
> What aplay -v -Dplug:headset /usr/share/sounds/alsa/Front_Center.wav says?
> Doesn't it say that "Prorotocol not available (92)" ?

Nope, the output is just:

# aplay -v -Dplug:headset /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit
Little Endian, Rate 48000 Hz, Mono
Plug PCM: Rate conversion PCM (8000, sformat=S16_LE)
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 1
  rate         : 48000
  exact rate   : 48000 (48000/1)
  msbits       : 16
  buffer_size  : 24048
  period_size  : 144
  period_time  : 3000
  tick_time    : 0
  tstamp_mode  : NONE
  period_step  : 1
  sleep_min    : 0
  avail_min    : 144
  xfer_align   : 144
  start_threshold  : 24048
  stop_threshold   : 24048
  silence_threshold: 0
  silence_size : 0
  boundary     : 1576009728
Slave: Bluetooth SCO Audio
Its setup is:
  stream       : PLAYBACK
  access       : MMAP_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 1
  rate         : 8000
  exact rate   : 8000 (8000/1)
  msbits       : 16
  buffer_size  : 4008
  period_size  : 24
  period_time  : 3000
  tick_time    : 0
  tstamp_mode  : NONE
  period_step  : 1
  sleep_min    : 0
  avail_min    : 24
  xfer_align   : 24
  start_threshold  : 4008
  stop_threshold   : 4008
  silence_threshold: 0
  silence_size : 0
  boundary     : 2101346304

Rate conversion is done (48kHz->8kHz) so this can't be the problem
anyways. Furthermore, if I play some longer file (or for example a
mp3 via xmms with the headset as alsa output device selected) the
same happens. Headset beeps initially, sound is playing according to the
user level in Linux quite normally but there is no sound at the headset,
just this very low noise (that goes away when the user level player,
aplay or xmms, is done). 

Oh, and I also tried to record something off the headset via arecord: 
the sound seems to be recorded (again, no errors at all) but the
resulting wav-file is just empty.

Greets, David


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