> Grant, > If you want to do a complete switch then you would change your USB > card to index 0 and restart Als which would make the USB card the > default since card 0 is always the default for Alsa. On the other > hand, if you wanted to just leave the onboard card as default and send > audio from a specific application to the USB card you would tell the > application to use hw:1 explicity, either in the command line when you > start the app or in an application's config file. On my system I let > all my web/browest audio go to the onboard sound card but I send all > my CD audio directly to my good card using Aqualung and configuring it > from the command line. (Actually in my launcher.) > > to the best of my knowledge there has never been a way to simply > switch sound cards on the fly in Alsa. I've requested this sometime > back but the developers haven't shown any interest. > > Hope this helps, > Mark
Hi Mark, Changing the index and restarting alsasound would be a great switching method but I can't get that to work. No matter which one I set to index=0 and which to index=1 the sound always comes out of the USB card. BTW, what sound card are you using? Here's mine, it's great: http://diyparadise.com/shop/index.php?main_page=product_info&cPath=2&products_id=82 - Grant > > > > I have a USB sound card and an internal sound card in my laptop. Is > > > > there a way to switch between them while the system is booted? Is > > > > module loading/unloading via modprobe the best way to do it? > > > > > > > > - Grant > > > > -- > > > > gentoo-user@lists.gentoo.org mailing list > > > > > > > > > > > > > > Why switch between them when you can use them both at the same time as > > > hw:0 and hw:1? > > > > Thanks Mark. After studying your config, here is mine: > > > > alias snd-card-0 snd-hda-intel > > options snd-hda-intel index=1 > > options snd-hda-intel model=acer > > > > alias snd-card-1 snd-usb-audio > > options snd-usb-audio index=0 > > > > > > alias sound-slot-0 snd-card-0 > > alias sound-slot-1 snd-card-1 > > > > > > alias /dev/mixer snd-mixer-oss > > alias /dev/dsp snd-pcm-oss > > alias /dev/midi snd-seq-oss > > > > > > options snd cards_limit=2 > > > > I get sound from the USB card but not from the internal card > > (snd-hda-intel). How can I tell the system to turn off the USB card > > and turn on the internal card? > > > > - Grant > > > > > > > > > > > # Alsa 0.9.X kernel modules' configuration file. > > > # $Header: > /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsa-modules.conf-rc,v > > > 1.4 2004/11/16 01:31:22 eradicator Exp $ > > > > > > # ALSA portion > > > alias char-major-116 snd > > > > > > # OSS/Free portion > > > alias char-major-14 soundcore > > > > > > ## ALSA portion > > > alias snd-card-0 snd-intel8x0 > > > options snd-intel8x0 index=0 > > > alias snd-card-1 snd-hdsp > > > options snd-hdsp index=1 > > > > > > ## OSS/Free portion > > > alias sound-slot-0 snd-card-0 > > > > > > > > > # OSS/Free portion - card #1 > > > alias sound-service-0-0 snd-mixer-oss > > > alias sound-service-0-1 snd-seq-oss > > > alias sound-service-0-3 snd-pcm-oss > > > alias sound-service-0-8 snd-seq-oss > > > alias sound-service-0-12 snd-pcm-oss > > > > > > alias /dev/mixer snd-mixer-oss > > > alias /dev/dsp snd-pcm-oss > > > alias /dev/midi snd-seq-oss > > > > > > # Set this to the correct number of cards. > > > options snd cards_limit=2 -- gentoo-user@lists.gentoo.org mailing list
