My GUI is completely messed up and I need to get the gnome terminal working. Ctrl-Alt-T doesn't work because Unity or Gnome are broken. All I'm getting is a mouse and another program that I launched with other keys. I need to login into TTY (Ctrl+Alt+F1) and write a command that will open the gnome terminal in the GUI (Ctrl+Alt+F7). I already tried nohup and some other command I don't remember. I have also tried placing the terminal into startup but it didn't start at boot.
From tty1 you can open the gnome-terminal in tty7 (where the GUI should be started) by running the following command:
env DISPLAY=:0 gnome-terminal
See some more explanations in this post.