kevin liu wrote: >> OK, the problem is that the kernel assigns card numbers based on >> whatever it wants, so the cards can move around each time you boot the >> system. >> > > My case is a little different from yours. > I have an on-board sound card and another usb audio card when I plug my tv card. > ++++++++++++++++++++++++++ > Before my tv card plug: > kevin@ubuntukevin:~$ cat /proc/asound/cards > 0 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0xcddf8000 irq 16 > After I plug tv card: > kevin@ubuntukevin:~$ cat /proc/asound/cards > 0 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0xcddf8000 irq 16 > 1 [Controlle ]: USB-Audio - USB 2.0 Video Capture Controlle > Syntek Semiconductor USB 2.0 Video Capture > Controlle at usb-0000:00:1d.7-4, hig > ++++++++++++++++++++++++++++++ > My usb audio device is not always plugged until it is needed. > Every time I plug my tv card, I also get the same card sequence as > /proc/asound/cards shows. > > OK, so if you *always* do it that way, then what you want is to tell alsa to use card 1 as the default. > What is the env ALSA_CARD stands for, it seems Linux sound system will > get the its value first when it starts to work. > I am a newbie here so give me some patience. :-) > ALSA_CARD tells alsa to use that card # as the default. So in your case you want to set ALSA_CARD=1 and then run your program. If the program you are using doesn't understand alsa, you need to run it using the aoss wrapper: aoss my_prog That should work. --Yan ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
