aplay combines 2 stereo chans into dual mono

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pnoziska
2011-12-29
2013-06-03
  • pnoziska
    pnoziska
    2011-12-29

    My alsa-info.sh output has been uploaded to:

    http://www.alsa-project.org/db/?f=f7a1b61e5187397e70c3e4b3cf8471a3e53b370d

    My Plantronics DSP500 USB headset gives me nice sound, but the only kind of sound I can get out of it is composite mono out both left and right speakers. A quick sound file creation using Audacity where I alternate audio between left and right tracks gives me each track on both speakers … not what should happen. running aplay on any stereo file with a different sound on each channel gives my a composite mono sound on both channels.

    'speaker-test -Dhw:0,0 -c2 -twav'  works correctly, i.e.,  it gived me correct separate channel output.

    I disabled PulseAudio completely and I'm not running any other sound server… I'm just trying this on naked ALSA.

    My alsa-info.sh output has been uploaded to:

    http://www.alsa-project.org/db/?f=f7a1b61e5187397e70c3e4b3cf8471a3e53b370d

    What's wrong with my setup?