Hi! On the alsa-devel mailing list, there was a thread recently about how to use udev to distribute card indexes. Maybe this could help you.
http://thread.gmane.org/gmane.linux.alsa.devel/44498 Regards, Ingo Michael Lara schrieb: > Hello, > > Is it possible to define the removable card as the default in a system with > a permanent, internal card and a removable (ie, USB) one? I know about > passing 'index=i' to the driver modules, but I am having a hard time > figuring out how to use that mechanism when one of the cards is removable. I > would like to use the following simple rule: > > If the removable (usb) card is connected to the system, make it the default. > Otherwise, use the internal card. > > The trouble is that, once the corresponding driver modules have been loaded > with a given index number: > > /sbin/modprobe snd-usb-audio index=0 [for the removable card] > /sbin/modprobe snd-intel8x0 index=1 [for the internal card] > > With this setup, aplay fails to produce sound when the removable card is not > present since default is not set (there is no card with index 0). > > Can I somehow tell alsa (in /etc/asound.conf) that the card with the *lowest > index* (ie, not necessarily the one with index=0) should be used as > 'default'? > > Thanks in advance for any help > > Michael ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
