Hi,
I am struggling with setting up the alsa dmixer with the M-Audio
Audiophile USB sound card. The card works well (even better now since
alsa 1.0.11rc4/linux 2.6.17rc1) but only one application can access it
at the same time. Internet search gives a lots of results for
asound.conf dmix configurations (and that it should work out of the box
with recent alsa versions) but the M-Audio seems to be special, as
always. So,
1. Is this a stupid question? (I am a newbie...)
2. What's the correct asound.conf? I tried the following (and many
similar to this):
[First soundcard is the onboard snd-intel8x0 card, the m-audio is the
hw:2,0. It's a debian sid system with kernel 2.6.17rc2]
--------------------------------------
pcm.!default {
type plug
slave.pcm "dmixer"
}
pcm.dmixer {
type dmix
ipc_key 1024 # This must be a unique IPC key (see ipcs output)
ipc_key_add_uid 0
ipc_perm 0660
slave {
pcm "hw:2,0"
channels 2;
period_time 4096
period_size 4096 # Must be power of 2 for alsa-oss
buffer_size 8192 # ditto
buffer_time 340000;
rate 44100
}
bindings {
0 0
1 1
}
}
# OSS via aoss should d(mix)stroyed:
pcm.dsp2 {
type plug
slave.pcm "dmixer"
}
ctl.mixer2 {
type hw
card 2
}
-----------------------------------------
the card still works with this, but no sound mixing. Playing a song and
using another sound appl at the same time gives:
WARNING **: alsa_setup(): Failed to open pcm device (hw:2,0): Device or
resource busy
3. Can jackd and simple alsa apps use the soundcard at the same time
with dmix (theoretically, if it would work)?
thanks, any help appreciated
Florian
