[Bluez-devel] "unable to install hw params" to bluetooth (SCO) headset (was: btusb+sco failing to play sound through Jabra BT500v headset)

martin f krafft
2008-09-05T16:26:54Z

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also sprach Marcel Holtmann <marcel@holtmann.org> [2008.08.26.1819 +0100]:
> don't use headsetd. Use the audio stuff that comes with bluez-utils.

So I am trying, and I got a little further, installing the right
lines into .asoundrc as per
http://wiki.bluez.org/wiki/HOWTO/AudioDevices. I have gotten beyond
issues of

bt_audio_service_open: connect() failed: Connection refused (111)
aplay: main:564: audio open error: Connection refused

but it still doesn't want to work. If I execute

arecord -D bt500v -f S16_LE | aplay -D bt500v -f S16_LE

then the headset makes a noise, the bluetooth LED flashes and
arecord prints

Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono

But then after about 30 or 40 seconds, it all fails:

ALSA lib pcm_bluetooth.c:464:(bluetooth_hsp_hw_params) BT_SETCONFIGURATION failed : Input/output error(5)
arecord: set_params:979: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: S16_LE
SUBFORMAT: STD
SAMPLE_BITS: 16
FRAME_BITS: 16
CHANNELS: 1
RATE: 8000
PERIOD_TIME: 125000
PERIOD_SIZE: 1000
PERIOD_BYTES: 2000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 4000
BUFFER_BYTES: 8000
TICK_TIME: [0 0]
aplay: playback:2019: read error

I have bluez-audio installed, but /etc/bluetooth/audio.conf is
default. No PulseAudio or anything other than plain ALSA here...

Any clues?

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martin | http://madduck.net/ | http://two.sentenc.es/

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