I did the theme change, but it didn't seem to have any impact. When I shutdown, I saw the ubuntu theme (instead of lubuntu) for the shutdown screen, but when it came back up it was still the blank screen.
I was able to push the down arrow twice (as I discovered in this bug's duplicate: https://bugs.launchpad.net/bugs/966450) and get the graphical password page, but it was still in the lubuntu theme instead of ubuntu!?!
I did the theme change, but it didn't seem to have any impact. When I shutdown, I saw the ubuntu theme (instead of lubuntu) for the shutdown screen, but when it came back up it was still the blank screen.
I was able to push the down arrow twice (as I discovered in this bug's duplicate: https:/ /bugs.launchpad .net/bugs/ 966450) and get the graphical password page, but it was still in the lubuntu theme instead of ubuntu!?!