Can you do a 'cryptsetup luksDump' on the device? Its just not possible that a device gets uncrypted without any password or keyfile.
** Changed in: cryptsetup (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1399692 Title: cryptsetup dialog does not ask for passphrase, just opens volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1399692/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs