2010/2/4 Guennadi Liakhovetski g.liakhovetski@gmx.de
On Wed, 3 Feb 2010, Raymond Yau wrote:
2010/2/3 Guennadi Liakhovetski g.liakhovetski@gmx.de
On Tue, 2 Feb 2010, Michael Trimarchi wrote:
I have tested it on the no-bluetooth interface. What is your testing application and the reporting error?
Using aplayer / arecord, I posted a couple of logs in other threads,
see,
e.g., http://thread.gmane.org/gmane.linux.alsa.user/33861 and a log
with
some debugging http://pastebin.ca/1773284
Thanks Guennadi
Try
export LIBASOUND_DEBUG=1 arecord -v -Dplughw:0,0 -c 1 -f S16_LE -r 800 -d 30 any.wav
No success either (with 8000Hz instead of 800):
Recording WAVE '/tmp/any.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono CHOOSE called: 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: ALL choose done 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 arecord: set_params:1053: 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
Thanks Guennadi
if LIBASOUND_DEBUG = 1 cannot tell you which parameter fail in hw_params() , you will need to define RULES_DEBUG in alsa-kernel/core/pcm_native.c and compile driver with debug=verbose
-#undef RULES_DEBUG +#define RULES DEBUG 1
you can find out how ALSA refine the hw parameters by examing the system log