New Laptop - fresh Solus fine, updated Solus broken?

needsumhelp

Hey, I'm using Solus since at least three years and apart from some quirks which I was able to solve, it always worked well. Very happy so far.

Now I got a new laptop and installed a fresh Solus copy. All works as intented, several restarts to test, all good.
Then I updated the system, the first update after installing (tried both, by terminal and software center). The updating worked smooth, all good.

Then after restarting, it always goes back to file system password (encryption) when it booted.
File system password, solus password screen, couple of seconds, file system password again. When I'm fast at typing, I get to my desktop, but then freeze again and file system password again.

I tried to reinstall several times, it's always the same issue.

Solus Budgie, HP Victus, AMD Ryzen 5 5600h, NVIDIA GEFORCE RTX (apaerently the graphics in "about" is "AMD Renoir"?)

Any help for troubleshooting appreciated.

needsumhelp

Heading to bed now, work early in the morning. I'll come back to this in about 12 hours and reply if there are questions.

EDIT: It actually restarts after it freezes. So, file system pass - boot into solus - freeze after couple of seconds - restart - file system pass - etc