Messages in this thread | | | Date | Thu, 14 Jul 2011 17:01:08 -0400 (EDT) | From | Justin Piszcz <> | Subject | 2.6.39.2: alsa question: usb sound/card shows up as mixer1/audio1? |
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Hi,
Is this a simple udev issue or something else? I bought two of these but they are actually different devices, on one host it works ok, on the other, I get this:
p34:~# dmesg|grep -i audio [ 15.499078] usb 2-2.4: Product: C-Media USB Audio Device [ 15.500235] input: C-Media USB Audio Device as /devices/pci0000:00/0000:00:1d.7/usb2/2-2/2-2.4/2-2.4:1.3/input/input5 [ 15.500416] generic-usb 0003:0D8C:0008.0003: input,hidraw2: USB HID v1.00 Device [C-Media USB Audio Device ] on usb-0000:00:1d.7-2.4/input3 [ 15.534185] usbcore: registered new interface driver snd-usb-audio p34:~# ls /dev/mixer* /dev/mixer1 p34:~# ls /dev/audio* /dev/audio1 p34:~#
$ 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
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$ aumix
aumix: error opening mixer: No such file or directory
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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?
Justin.
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