Le Mon, 23 Feb 2009 19:23:46 +0100,Paride Legovini <legovini@xxxxxxxxxxxxxxxxxxxxx> a écrit : > Is there a fallback mechanism in the alsa's configurations files, so the > usb card1 is used *only if present*, else the integrated card0 is chosen?> > Or, if there isn't, is there any smart way to do it?> > I searched the list, a similar question was asked in 2007 and the answer > was "no", but maybe something is changed since then...> > Thank you.> p.> One problem with usb sound cards is that udev, on some system, load them atboot time before than alsasound load them. And alsasound cannot load the soundcards with the order specified in /etc/modprobe.d/alsa. After restarting (stop+ start), the order is the same than in /etc/modprobe.d/alsa. This is the easy case. It is just to blacklist snd-usb-audioin /etc/modprobe.d/blacklist and it will not be loaded by udev. For your problem, the only solution I can see would be to not use alsasound atall, and use a pure udev system. For that, you will have to write your own udevrules. An alternative can be to use /etc/modprobe.d/alsa to fix the sound cards order,blacklist snd-usb-audio if needed, and use jack as sound server. Cheers,Dominique > ------------------------------------------------------------------------------> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise> -Strategies to boost innovation and cut costs with open source participation> -Receive a $600 discount off the registration fee with the source code: SFAD> http://p.sf.net/sfu/XcvMzF8H> _______________________________________________> Alsa-user mailing list> Alsa-user@xxxxxxxxxxxxxxxxxxxxx> https://lists.sourceforge.net/lists/listinfo/alsa-user ------------------------------------------------------------------------------Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise-Strategies to boost innovation and cut costs with open source participation-Receive a $600 discount off the registration fee with the source code: SFADhttp://p.sf.net/sfu/XcvMzF8H_______________________________________________Alsa-user mailing listAlsa-user@xxxxxxxxxxxxxxxxxxxxxxxxxx://lists.sourceforge.net/lists/listinfo/alsa-user
