Happens here too, each time I activate the screensaver I cannot log back in normally. Started this morning. I'm running maverick btw.
If this happens, you can choose 'switch user' and then login again using the normal GDM login screen. So it is the screen saver dialog that does not recognise the password. auth.log says: May 6 11:27:43 lord-jim unix_chkpwd[8053]: check pass; user unknown May 6 11:27:44 lord-jim unix_chkpwd[8055]: check pass; user unknown May 6 11:27:44 lord-jim unix_chkpwd[8055]: password check failed for user (maarten) May 6 11:27:44 lord-jim gnome-screensaver-dialog: pam_unix(gnome-screensaver:auth): authentication failure; logname= uid=1000 euid=1000 tty=:0.0 ruser= rhost= user=maarten ... May 6 11:33:17 lord-jim gdm-session-worker[8300]: pam_succeed_if(gdm:auth): requirement "user ingroup nopasswdlogin" not met by user "maarten" May 6 11:33:19 lord-jim gdm-session-worker[8300]: pam_unix(gdm:session): session opened for user maarten by (uid=0) May 6 11:33:19 lord-jim gdm-session-worker[8300]: pam_ck_connector(gdm:session): nox11 mode, ignoring PAM_TTY :1 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/774273 Title: unlock screen no longer works -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
