Comment 161 for bug 1311316

Can any of the people still experiencing the problems to add 'debug' to in /etc/pam.d/unity to each of the modules used and potentially post some of their /var/log/auth.log. For me I found this is an issue of the PAM module for fprtind giving me:

Feb 23 12:52:23 botev-ThinkPad-T440 unity[2008]: pam_fprintd(unity): get_devices failed: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.