Dne 27. 02. 19 v 16:44 Olivier SCHMITT napsal(a):

Hello,

Thanks for reply,

I have configure /etc/modprobe.d/alsa-base.conf with:

options snd-aloop index=5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29 id=lp0,lp1,lp2,lp3,lp4,lp5,lp6,lp7,lp8,lp9,lp10,lp11,lp12,lp13,lp14,lp15,lp16,lp17,lp18,lp19,lp20,lp21,lp22,lp23,lp24 enable=1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 pcm_substreams=2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2

but when i use index more than 32, i have some message in syslog that it's say alsa can't use index greather than 32...

Maybe have your an idea for modify et recompiling kernel?

I'm afraid, the ALSA card limit (32) is hardcoded and cannot be easily changed. The recompilation won't help.

You may use up to 8 pcm substreams per the loop card. This limit can be increased by changing the value in aloop.c (kernel driver).

Jaroslav

Le 27/02/2019 à 15:35, Jaroslav Kysela a écrit :

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Dne 27. 02. 19 v 15:20 Olivier SCHMITT napsal(a):

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Hello All,

First, thanks for your project!

I search to increase the maximum number of 32 alsa loopback.

Can someone say me how do this?

There's hardcoded limit for the PCM substreams to 8, but you may enable more loopback cards (options snd-aloop enable=1,1,1,1).

		Jaroslav