linuxaudio.org

Muffinman wrote:

quoted text
> I'm struggling a bit with getting libao to work in C on Debian (Squeeze,

> kernel 2.6.38.5, driver is Alsa). I've got this slightly modified test

> script and it seems to work fine on my internal soundcard (it opens the

> device and plays a test tone). However, when trying to do the same trick

> on an external USB-dac (tried two different models), it gives an

> "Input/output error". I've tried different settings, but as far as I can

> see there is not really that much to set (especially if it plays on one

> soundcard but not the other, dev=hw:1 should suffice).

It's possible that the USB device does not support this sample format.

Try default:1 instead of hw:1.
Regards,

Clemens

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