openSUSE 13.2 lock screen unlocks without password prompt
Having the same issue? Look no further then here and uninstall fprintd.
What? Yes, you read correctly. Apparently fprintd got installed as the openSUSE install detected a laptop. I drove me crazy having my workstation not locked and today I undertook another google searching session and finally found this next to the countless gnome-screensaver related discussions on the web.