fingerprint login for lightdm

[pailaka]

I have a thinkpad x1 carbon with a fingerprint sensor. I have successfully enrolled a fingerprint, and it works great for sudo (terminal) and for unlocking after screen lock, and pretty much everything except initial login at the lightdm screen.

It appears to work on the lightdm screen, it says "place fingerprint" and appears to accept it with a "login" prompt, but then when I press the login prompt it restarts the entire process. Eventually I am able to let it timeout and I can use my password to login.

Code: Select all

$ cat /var/log/auth.log

complains about

Code: Select all

lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory

Code: Select all

lightdm: gkr-pam: no password is available for user

Code: Select all

lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "

Re: that last one, I added myself to the "nopasswdlogin" group but then I couldn't login at all. I had to drop to a single user mode to remove myself from that group to even login.
Is it a pam login permissions problem? Any help is appreciated.

[pailaka]

I ended up disabling it for the login screen using these instructions:

Code: Select all

https://askubuntu.com/questions/210815/how-can-i-login-to-lightdm-with-password-for-fingerprint-enabled-user-after-12-1

Looks like a temporary fix, since pam updates will not affect lightdm, so still looking for a proper fix

[SMG]

Maybe something in this thread Solving - Systemlog: Lightdm: PAM adding faulty module: Pam_kwallet.so and/or Pam_kwallet5.so will help you.

[faravena]

Hello, have you found any solution?

Exactly the same thing happens to me when I log in with my fingerprints, it returns to ask me to log in, and I must wait for the time out to be able to log in with a password.
Once inside, the fingerprint reader works without problems.

Thank you,

regards