the BB-AUDI-02 overlay will work for the Bela cape. For CTAG you'd need either BB-CTAG-SW-16CH-00A0.dts or BB-CTAG-SW-8CH-00A0.dts depending on whether you are using BEAST or FACE, respectively. These are all mainlined on BeagleBoard's repos, so I expect that they'd be available out of the box on any image they distribute.

could you describe how to do it step by step, please? I am a total beginner with Linux. thx.

hmm I wouldn't know the exact steps, because they ship a different image from ours. This probably involves editing a file in /boot/uEnv.txt. The best place for generic beagleboard-related questions would be forum.beagleboard.org .

    ok, thanks. However, I still struggle with the issue of how to install Sonobus or Jamulus on the BBB with using BELA as audio hardware with ALSA. I started to address it here https://forum.bela.io/d/1628-peer-to-peer-audio-streaming/13 . Do you have any experience with how to install Sonobus without graphical display and then use it as a standalone BBB and Bela unit?

    I never used it. By the looks of it, it does require a GUI. You could maybe contact its developers?

      giuliomoro I already tried this https://forum.bela.io/d/1210-davinci-mcasp-too-fast-reference-clock/5 . But basically, I would need exactly like this (with the jack sound server and supercollider, https://github.com/ctag-fh-kiel/bela-ctag/releases , https://github.com/ctag-fh-kiel/bela-ctag/wiki ), but with the Debian img – OMAP3/DM3730 Debian 9.5 2018-10-07 4GB SD LXQT .
      Is it possible to somehow upgrade the image with BB-CTAG-SW-8CH-00A0.dtbo , BB-CTAG-SW-16CH-00A0.dtbo , BB-BONE-AUDI-02-00A0.dtbo ?

      giuliomoro I already successfully installed it. But still missing the Bela audio hardware

      gulesz if this is correct?

      this looks OK to me.

      gulesz I still got that

      can you try :

      cat load-ctag-beast-16ch-drivers.sh

      so that I can see its content? I don't actually know what's in there.

      Then try:

      ls -l

      to verify whether it's actually executable.

      Then, to run it regardless of its executable state:

      bash -x ./load-ctag-beast-16ch-drivers.sh

      OK, so that script only loads the overlay, which shouldn't be needed if you loaded it via uenv.txt. Can your run dmesg | tail -n 20 immediately after you run bash -x ./load-ctag-beast-16ch-drivers.sh? T

      Also, what's the output of aplay -l and aplay -L ?

      just for recapitulation, the point is to use Sonobus on Debian LXQt with the I/O of Bela/CTAG/Bela Mini.
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