[Not] Solving "The system is running in low graphic mode" on boot...

Followed the directions at http://askubuntu.com/questions/141606/how-to-fix-the-system-is-running-in-low-graphics-mode-error:

1. Used Control-Alt-F1 to get an alternate terminal and log in.
2. sudo apt-get install --reinstall ubuntu-desktop
3. sudo reboot

Update: Well, this didn't work. Next time I booted, I had the same problem...