kevin liu wrote: >> ALSA_CARD tells alsa to use that card # as the default. >> >> So in your case you want to set >> >> ALSA_CARD=1 >> > > But I think I should not assign a static ALSA_CARD number in a > usrspace script. > Before I plug my usb audio device, ALSA_CARD 1 is not present, so > I can only give application such as aplay or mplayer options to tell > them which alsa sound device it should use, I have a problem here: > When I cat /proc/asound/cards: > 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 > But when I run aplay -l: > kevin@ubuntukevin:~$ aplay -l > **** List of PLAYBACK Hardware Devices **** > card 0: Intel [HDA Intel], device 0: CMI9880 [CMI9880] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > card 0: Intel [HDA Intel], device 1: CMI9880 Digital [CMI9880 Digital] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > > Please copy the list; there's more wisdom there than I can provide. > I can not get any information about the second sound card. > So when I give asound player device options to sound card 1, it > just complaint that device is not present. > Is this a bug of aplay? > I'm not sure; all I can tell you is that setting ALSA_CARD works for me in setting the default card. It is also possible that you have a .asoundrc file in your home directory; if so you should delete it (or rename it). That file can override any other settings you make. --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
