Comment 140 for bug 1311316

Yeah, I'm going to go ahead and suggest folks try adding the PPA at https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-004 to their sources and update to the Unity found there. It contains a whole slew of bugfixes currently in the SRU landing pattern, including a bunch of the "me too" bugs getting reported here.

The release in the PPA should land in trusty-updates real soon (due diligence and all), but in the mean time should help a lot of these lockscreen authentication problems.