(Yocto-based embedded Linux on Raspberry Pi) I used to be able to get card numbers assigned by creating an /etc/modprobe.d/alsa.conf file containing: options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio and I would wind up with my DAC as card 0, followed by any USB devices that happened to be plugged in. When I switched from Yocto Morty to Pyro, going from alsa-lib 2.1.1 to 2.1.2 and kernel 4.8 to 4.9, this stopped working. (Admittedly, other things changed, too.) To figure it out, I tried this alsa.conf: options snd cards_limit=8 slots=snd-soc-hifiberry-dacplus,snd-usb-audio install snd-soc-hifiberry-dacplus \ echo 'Installing snd-soc-hifiberry-dacplus'; \ /sbin/modprobe --ignore-install snd-soc-hifiberry-dacplus install snd-usb-audio \ echo 'Installing snd-usb-audio'; \ /sbin/modprobe --ignore-install snd-usb-audio I do indeed see the messages in the log, so those names are being recognized. The sound is working (although with an unpredictable card number) so the drivers are loaded. But my slot assignments are: midiC0D0 a USB MIDI device midiC1D0 another USB MIDI device pcmC2D0p and pcmC2D1p on-board crappy PWM audio pcmC3D0p Hifiberry DAC pcmC4D0p HDMI audio The last two can be in either order. So it appears the slots option to the snd module doesn't do anything. I tried adding the cards_limit parameter with various values, and that changed nothing. I also tried adding the index parameter as an option to the individual drivers, but the hifiberry doesn't understand it. Did something change in 2.1.2? Or am I doing something wrong? Is "snd" no longer the name of the top level ALSA sound module? I don't see it listed in lsmod. -- Ciao, Paul D. DeRocco Paul mailto:pderocco@xxxxxxxxxxxxx ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
