[LAU] Several USB cards position in /proc/asound/cards

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To: <linux-audio-user@...>, <alsa-user@...>
Date: Thursday, October 8, 2009 - 8:59 am

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Sorry in advance for crossposting.

I used to have three soundcards in this system. One internal soundcard
embedded in my mobo, then an RME PCI soundcard, and an USB MIDI
interface. Then I added this code to /etc/modprobe.d/alsa-base.conf .

# Make sure internal soundcard grabs index 0
alias snd-card-0 snd-intel8x0
alias sound-slot-0 snd-intel8x0
options snd-intel8x0 index=3D0
alias snd-card-1 snd-rme96
alias sound-slot-1 snd-rme96
options snd-rme96 index=3D1
alias snd-card-2 snd-usb-audio
alias sound-slot-2 snd-usb-audio
options snd-usb-audio index=3D2

So in /proc/asound/cards the internal soundcard gets index 0, the PCI
soundcard gets index 1 and the MIDI interface gets index 2.

Now I bought an USB webcam, which also has a mic input. It appears in
the system as another USB soundcard. The problem is that during boot
as hotplug runs before anything else the first soundcard gets index 2
as specified by alsa-base.conf but the second soundcard overrides
index 0. Module snd-intel8x0 is loaded but internal soundcard is not
available and does not appear in /proc/asound/cards.

How do I specify order of *several* USB soundcards in alsa-base.conf?

Any information very useful so thanks in advance.

Cordially, Ismael
Ismael Valladolid Torres Hey there! ivalladt is using Twitter.

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Messages in current thread:
[LAU] Several USB cards position in /proc/asound/cards, Ismael Valladolid Torres, (Thu Oct 8, 8:59 am)
Re: [LAU] Several USB cards position in /proc/asound/cards, Pedro Lopez-Cabanillas, (Thu Oct 8, 11:48 am)
Re: [LAU] Several USB cards position in /proc/asound/cards, Clemens Ladisch, (Thu Oct 8, 11:45 am)
Re: [LAU] Several USB cards position in /proc/asound/cards, Ismael Valladolid Torres, (Thu Oct 8, 12:40 pm)