After restarting the computer, I can mount the drive just fine. I suspect the problem is linked to the backup program trying to run while the drive is not mounted.
-- Can't mount encrypted external hard drive https://bugs.launchpad.net/bugs/487526 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