Hi, I'm trying to configure asound.conf to support "two cards as one"
(but with 3, 8 channel cards!) as suggested in the .asoundrc doc. When I
try to aplay the new device however I get:
"ALSA lib pcm_multi.c:928:(_snd_pcm_multi_open) Invalid or missing
schannel for channel 0
aplay: main:462: audio open error: Invalid argument"
I'm using three terratec ews88mt cards and my asound.conf looks like this:
pcm_slave.ssl8_s {
pcm ssl8_0
}
pcm.ssl8_0 {
type hw
card 0
}
ctl.ssl8_0 {
type hw
card 0
}
pcm.ssl8_1 {
type hw
card 1
}
ctl.ssl8_1 {
type hw
card 1
}
pcm.ssl8_2 {
type hw
card 2
}
ctl.ssl8_2 {
type hw
card 2
}
ctl.ssl_24 {
type hw
card 0
}
pcm.ssl_24 {
type multi;
slaves.a.pcm ssl8_0;
slaves.a.channels 8;
slaves.b.pcm ssl8_1;
slaves.b.channels 8;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave a;
bindings.2.channel 2;
bindings.3.slave a;
bindings.3.channel 3;
bindings.4.slave a;
bindings.4.channel 4;
bindings.5.slave a;
bindings.5.channel 5;
bindings.6.slave a;
bindings.6.channel 6;
bindings.7.slave a;
bindings.7.channel 7;
bindings.0.slave b;
bindings.0.channel 8;
bindings.1.slave b;
bindings.1.channel 9;
bindings.2.slave b;
bindings.2.channel 10;
bindings.3.slave b;
bindings.3.channel 11;
bindings.4.slave b;
bindings.4.channel 12;
bindings.5.slave b;
bindings.5.channel 13;
bindings.6.slave b;
bindings.6.channel 14;
bindings.7.slave b;
bindings.7.channel 15;
bindings.0.slave c;
bindings.0.channel 16;
bindings.1.slave c;
bindings.1.channel 17;
bindings.2.slave c;
bindings.2.channel 18;
bindings.3.slave c;
bindings.3.channel 19;
bindings.4.slave c;
bindings.4.channel 20;
bindings.5.slave c;
bindings.5.channel 21;
bindings.6.slave c;
bindings.6.channel 22;
bindings.7.slave c;
bindings.7.channel 23;
}
pcm.ttable {
type route;
slave.pcm "ssl_24";
ttable.0.0 1;
ttable.1.1 1;
ttable.2.2 1;
ttable.3.3 1;
ttable.4.4 1;
ttable.5.5 1;
ttable.6.6 1;
ttable.7.7 1;
ttable.8.8 1;
ttable.9.9 1;
ttable.10.10 1;
ttable.11.11 1;
ttable.12.12 1;
ttable.13.13 1;
ttable.14.14 1;
ttable.15.15 1;
ttable.16.16 1;
ttable.17.17 1;
ttable.18.18 1;
ttable.19.19 1;
ttable.20.20 1;
ttable.21.21 1;
ttable.22.22 1;
ttable.23.23 1;
}
# see above.
ctl.ttable {
type hw;
card 0;
}
Incidentally I can't see what the first pcm_slave entry is for. Can I
get this to work somehow?
Thanks
Fergus
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