Re: Number of i/o-channels for a usb-class-compliant device

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Hi,

thanks a lot! The /proc/asound/card?/stream0 indeed shows that there  
are 8/8 channels available. I was moreover able to fix my problem with  
JACK (just had to disable the D-BUS interface). Choosing the fireface  
as input and output device together with the alsa driver, JACK boots  
without any problems and 8/8 channels are available. I tested the 8  
output channels using SuperCollider through JACK, they seem to work  
fine. Great!

I did not check the input channels and latency so far.

Best,

Florian

Quoting Clemens Ladisch <cladisch@xxxxxxxxxxxxxx>:

> Florian Hanisch wrote:
>> I am running an RME Fireface UCX in the usb-2.0-audio class-compliant
>> mode. I can get stereo-sound but alsamixer is not working.
>>
>> Is there an easy way to get the number of in/out channel that the
>> device/the alsa-driver provides ?
>
> Look into /proc/asound/card?/stream0.
>
>> And if there are more than 2/2 channels, how do I activate these
>> extra channels ?
>
> Nothing special.  Try the --channels parameter of speaker-test.
>
>
> Regards,
> Clemens
>




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