journalctl --unit=gdm.service There is following strange line:
Apr 30 19:07:27 seal gdm-fingerprint][8190]: gkr-pam: no password is available for user ** Attachment added: "gdm-service.txt" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1926402/+attachment/5493936/+files/gdm-service.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1926402 Title: Gdm offers different login methods randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1926402/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs