Re: ALSA usb sound card on ARM

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(please don't top-post)
Victor Librado wrote:
> I finally got the device to work. I have a look into the mailing list and
> uncommented the #define IGNORE_CTL_ERROR.
> Now if I start ARM with the sound card connected the card is recognised as
> /dev/dsp and i can play audio. However i still got the exceptions "cannot
> set ctl value ....". Are important? or really doesn´t matter?

Your device doesn't correctly implement some mixer commands.

It's possible to make this device known to the driver so that the messages
aren't shown.  Please show the output of lsusb (on this or any other
computer where this device is connected).

> Anyway if i power on the ARM (without the sound card) and then connect it
> the sound card isn´t registered and i can´t play files.

This may be a problem with your USB controller or the controller driver.
Ask on the linux-usb-devel list.


HTH
Clemens

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