[lkml]   [2011]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: 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


 \ /
  Last update: 2011-07-22 10:03    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean