There are 2 sound cards: an internal one and an external USB one. Here
is listing for aplay -l:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: AD198x Digital [AD198x Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: System [USB Audio System], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
Here is my ~/.asoundrc, however, dmix is only working with hw:0,0
pcm.internal {
type hw
card 0
}
pcm.internal {
type dmix
ipc_key 1234
slave {
pcm "hw:0,0"
}
bindings {
0 0
1 1
}
}
ctl.internal {
type hw
card 0
}
pcm.usb-audio {
type hw
card 1
}
pcm.usb-audio {
type dmix
ipc_key 4321
slave {
pcm "hw:1,0"
}
bindings {
0 0
1 1
}
}
ctl.usb-audio {
type hw
card 1
}
To test I run aplay -D plug:dmix -D hw:1,0 /usr/share/sounds/alsa/Front_Center.wav from 2 different terminals, but the second instance of it fails with the error "aplay: main:545: audio open error: Device or resource busy"
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