Score:3

stuck in fingerprint authentication

gt flag

I have updated my Thinkpad T490 laptop to Ubuntu 22.04. Everything went fine.
After the update I have activated the fingerprint to login and... I can not login anymore.
When I click on my user name on the login screen, I briefly (less than 0.5 sec) see the place where I should be able to write my password. I can read the error message "Sorry, fingerprint authentication did not work. Please try again"and then it goes back to the login screen with the name of my user. I can still access to a terminal using Ctrl + Alt + F5.

Does anyone have an idea on how to solve this problem?
Is there a way to disable fingerprint authentication from command line?

ChanganAuto avatar
us flag
You should try until the password field shows up again.
pa4080 avatar
cn flag
As workaround you can remove the fingerprint service by `sudo apt remove fprintd` (after log-in into the TTY - Ctrl + Alt + F5), but it will be nice if someone can tell how to get it operational.
jwollbrett avatar
gt flag
@ChanganAuto The password field was showing each time that I was clicking on my user name, but was disappearing really fast. Sometime I was not even able to see the password field
jwollbrett avatar
gt flag
@pa4080 Thank you so much, it worked :-D. I was so stressed not to be able to disable the fingerprint. If you write your comment as an answer I will select it as the solution to my problem.
in flag
Retrying "until password login comes up" didn't work for me after 30x tries.
Score:2
cn flag

I'm having the same problem on my ThinkPad X230T. The workaround is to remove the fingerprint service. So after log-in into a TTY (Ctrl + Alt + F3-F5) you can do that by the command:

sudo apt remove fprintd

Disabling and stopping the service didn't solve the problem in my case because a few reboots later for some reason it was enabled again.

I haven't investigated yet why it doesn't work as it is expected.

Score:0
in flag

For me, fprintd wasn't installed during the Ubuntu 22.04 upgrade (from 20.04).

I ran sudo apt-get install fprintd and restarted. That fixed the issue and I was able to login via password.

(I'm on a Thinkpad T480s)

Score:0
us flag

Authenticating with password is a fallback for failed fingerprint login.

So, if you try (and fail) enough times with the fingerprint the password field will come up eventually.

I sit in a Tesla and translated this thread with Ai:

mangohost

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