Hi @ChrisJ7903,
I had a similar keyboard-freeze on my Laptop 16 (Ryzen AI 7 350); Although Mint wasn’t installed, Mint’s desktop environment was: Ubuntu Cinnamon 25.10.
Like you, installing vanilla Ubuntu 25.10 fixed the issue. I also prefer Mint to Ubuntu, so hopefully this gets fixed in time for Mint 23, which will have a supported kernel (based on Ubuntu 26.04).
Ubuntu Cinnamon 25.10 does have a supported kernel (6.17), and since the issue also appeared on a different Cinnamon-based install (Fedora Cinnamon Spin 43), it seems to be a problem with Cinnamon or X11 (vanilla Ubuntu uses GNOME/Wayland), rather than (just) the kernel.
I wrote a bit more in this thread: