Curious, which ThinkPad was this? I got a T14s with AMD last year and it is one of best laptops I've used till date, and works with Linux out of the box, incl graphics, networking, USB-C docks etc.
If you're interested, here's a thread about the issue me and several other people have been facing.
https://bbs.archlinux.org/viewtopic.php?id=266358
The issue has been "fixed" for now by downgrading to the March 2021 release of Linux Firmware for most people. Of course, this isn't really a fix.