I would be interested in this!

As I just wrote above, with Linux Mint 20 Cinnamon sound and bluetooth also works right out of the box 🙂 The wifi switch problem is still there, though, and neither touchscreen nor cameras work.

Did you find a solution for not having to go into BIOS to boot, by the way?

@Max: With the brand new Linux Mint 20 Cinnamon, using Kernel 5.4, touchscreen and neither camera works, but sound, battery indicator and bluetooth and, as far as I can see, everything else works out of the box.