I had the same problem in elementary OS Loki. The same messages as it is described above. Those bug was affecting my login time in the pantheon graphical environment so I came out with a very quickie work - arround. I edited and I delete the lines which have pam_kwallet.so and pam_kwallet5.so. Make a backup before you try it.
/etc/pam.d/lightdm #%PAM-1.0 auth requisite pam_nologin.so auth sufficient pam_succeed_if.so user ingroup nopasswdlogin @include common-auth auth optional pam_gnome_keyring.so auth optional pam_kwallet.so auth optional pam_kwallet5.so @include common-account session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close #session required pam_loginuid.so session required pam_limits.so @include common-session session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open session optional pam_gnome_keyring.so auto_start session optional pam_kwallet.so auto_start session optional pam_kwallet5.so auto_start session required pam_env.so readenv=1 session required pam_env.so readenv=1 user_readenv=1 envfile=/etc/default/locale @include common-password /etc/pam.d/lightdm-greeter #%PAM-1.0 auth required pam_permit.so auth optional pam_gnome_keyring.so auth optional pam_kwallet.so auth optional pam_kwallet5.so @include common-account session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close session required pam_limits.so @include common-session session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open session optional pam_gnome_keyring.so auto_start session optional pam_kwallet.so auto_start session optional pam_kwallet5.so auto_start session required pam_env.so readenv=1 session required pam_env.so readenv=1 user_readenv=1 envfile=/etc/default/locale -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1511824 Title: Can't login as ordinary user with lightdm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1511824/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs