pam_authenticate login Conversation failed

From: Manfred Koch <md-koch_at_t-online.de>
Date: Sun, 16 Feb 2025 16:01:46 UTC
Hi community,

I am using the 14.2-RELEASE-p1 on the Desktop. In the
/var/log/auth.log and /var/log/messages I get the pam
Conversation failed to login.
I didn't get any ttyv1 ttyv2 ttyv3 ....    Only the graphical
login with xdm worked.

Can somebody say what I shall do?
I would be very thankful, if you could help.

Manfred