18.04 login to Lightdm

[Volker Wysk]

Am Samstag, den 31.10.2020, 10:13 -0500 schrieb Jack McGee:
> Not sure what happened here.  I get login loop on desktop login. fills 
> in default username, but after entering password, screen goes black 
> briefly then goes back to login prompt.
> 
> I can login via SSH using same username/password combination.
> 
> I have pretty good backups if restoring something will fix this. I tried 
> restoring the /etc/lightdm folder but no difference.
> 
> mythuser at amethi:/var/log$ sudo tail -n50 auth.log
> 
(...)
> Oct 31 10:09:23 amethi lightdm: PAM unable to dlopen(pam_kwallet.so): 
> /lib/security/pam_kwallet.so: cannot open shared object file: No such 
> file or directory

This looks like the reason. /lib/security/pam_kwallet.so is missing somehow.
This causes the display manager to crash and restart.

Is kwallet installed?

What does "apt-file search pam_kwallet.so" say?

Try this:
sudo ldconfig

You also could try another display manager.


Good luck,
Volker
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