No Air for macOS Catalina?

[garyUK]

I had Devialet Air working prior to Catalina and then after upgrading to Catalina. This continued up until a later update of Catalina stopped it working.
After Devialet Air 3.0.5 was released I installed that and it again worked. When Big Sur was released and I upgraded to that it again stopped working.

At the time I did start to have a look into why it no longer worked. I don't actually use Devialet Air from my Macs as I can do everything I need to do using roon but I had it installed in case I needed to do something direct from one of my Macs.

As far as I could tell when Devialet Air is installed it installs a kernel extension (for the virtual sound card).

Apple now prefer System Extensions to be used rather than older Kernel extensions

see https://developer.apple.com/support/kernel-extensions

Up until 10.15.4 using a deprecated KPI triggered a user notification to contact the developer but usually still works.

I think the default in later versions is not to load such extensions. I think this could be circumvented in the pre GA releases of macOS so as to allow developers to work on their code.

To me it looked like failing to load the kernel extension gave rise to the virtual sound card error.

The conclusion I came to was that I was wasting my time trying to get it to load, certainly on Big Sur and that it was likely also a waste of time on the latest versions of Catalina
and that Devialet would need to update their app.

I could be wrong...