I have the same issue. Not a solution, but a good work around for me was to turn on the onscreen keyboard in the universal access settings.
This leads to a (fallback?) old school login screen which has no problem with the finger print reader. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310104 Title: No way to trigger fingerprint authentication on lock screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1310104/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs