As stated in my last comment this bug only occurs once per boot. Attached is the debug log of the second attempt to lock/unlock which works properly.
** Attachment added: "debug log on unlocking success" http://launchpadlibrarian.net/26477048/gs_succeed.log -- Lock screen dialogue freezes on correct password https://bugs.launchpad.net/bugs/363361 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs