Fresh Ubuntu 20.10 on Lenovo T14 Gen1,
I followed tutorial https://help.ubuntu.com/stable/ubuntu-help/session-fingerprint.html.en
(however process is a bit buggy... when i register new finger, you need to touch sensor few times, i can touch sensor with different fingers every time and there is no info that something is wrong)

after adding one or two fingers, i can't login with fingerprint. There is a message on login screen that I can scan my finger, but when i scan it, nothing happens ...