Sorry to resurrect this old thread. Using the current release (2020-11-23) with the stock kernel results in the 7 USB audio/midi device limit.
When running the realtime kernel, I’m running into the issue of no USB devices showing up, as described here (I am using a Raspberry Pi 4, 4GB).
It seems like I have two options, neither of which are particularly appealing:
- recompile a kernel with the appropriate config to increase the USB audio device limit
- include a boot option that tricks the Pi into thinking it has 3GB of RAM
If somebody has found another way to solve this problem, I’m all ears.