Hello dear Alsa dev team members,
I try to increase alsa max number of cards in default 32 to 256 for use more than 32 loopback sound card for signal processing.
I have compile my kernel and also déclare in /etc/modprobe.d/alsa-base.conf more than id max value in default 31 i get a 32 it seam to work:
ls /proc/asound/ card10 card12 card14 card16 card18 card20 card22 card24 card26 card28 card30 *card32 *devices lp1 lp11 lp13 lp15 lp17 lp19 lp20 *lp22 *lp4 lp6 lp8 modules pcm timers card11 card13 card15 card17 card19 card21 card23 card25 card27 card29 card31 cards lp0 lp10 lp12 lp14 lp16 lp18 lp2 lp21 lp3 lp5 lp7 lp9 oss seq version
I have compile alsa-libs and alsa utils as:
sudo mkdir /usr/src/alsa cd /usr/src/alsa
git clone git://git.alsa-project.org/alsa-lib.git alsa-lib cd /usr/src/alsa/alsa-lib ./gitcompile --with-max-cards=256 make install
git clone git://git.alsa-project.org/alsa-utils.git alsa-utils cd /usr/src/alsa/alsa-utils ./gitcompile --with-max-cards=256 make install
but when i try to use aplay or speakertest with -D hw:32,0 i get: ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card Erreur d'ouverture à la lecture: -22,Invalid argument
Maybe i have forgot something?
Thanks in advance for reply :-)