macOS 15 Sequoia partially successful - Ryzen 5 5600G

Ryzen 5 5600G | Vega 7 | Prime B450M-A II | 2x8GB RAM at 3200Mhz | ALC887

Why partially successful ?

AppleALC isn't working, tried every layout-id but got no sound at all. Newest version (1.9.1) is installed. Tried with both -alcbeta on and off, nothing.
For unknown reasons, About this mac shows Intel I5 as my CPU, even with RestrictEvents and CPU-Name.

If you have any suggestions about sound issue, I would like to hear them.