Messages in this thread | | | Date | Fri, 22 Jul 2011 10:04:17 +0200 | From | Clemens Ladisch <> | Subject | Re: 2.6.39.2: alsa question: usb sound/card shows up as mixer1/audio1? |
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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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