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SubjectRe: 2.6.39.2: alsa question: usb sound/card shows up as mixer1/audio1?
Justin Piszcz wrote:
> I bought two of these but they are actually different devices, on one host
> it works ok, on the other, I get this:
> ...
> $ cat /proc/asound/cards
> 1 [Device ]: USB-Audio - C-Media USB Audio Device
> C-Media USB Audio Device at usb-0000:00:1d.7-2.4, full speed
>
> On the working host:
> $ cat /proc/asound/cards
> 0 [Device ]: USB-Audio - USB PnP Sound Device
> C-Media Electronics Inc. USB PnP Sound Device at usb-0000:00:1d.7-2.4, full spe
>
> Any clue why one is mapped to [1] and the other [0], where the one that is
> [0] works properly and the [1] does not?

Some distributions configure USB devices to not load at index 0 to
prevent conflicts with the primary PCI sound card. Have a look into
/etc/modprobe.d/.


Regards,
Clemens


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