Guest gets blue screen?

[Fireicee1]

Running VBOX 4.1.8, on a Mac OS X Snow Leopard host and an Ubuntu guest.

I had installed Gnome 3 in Ubuntu, and the Gnome Tweak Tool (for switching between custom Gnome themes). Shortly thereafter (I'm not even sure if Gnome 3 is even the problem, but that's what I was doing last in the guest OS), when I tried opening the VM next time around, I got this strange blue screen.

The screen has a blue background with black vertical lines running down it. There also appear to be huge, blown up letters (also outlined in black), but I can't make out they're spelling. I took a screenshot, but I can't post links yet.

Any ideas on how to fix this? The screen just stays like this indefinitely.

[Perryg]

Did you install the guest additions (in the guest)?
Start in tty and install them and this should take care of the issue.

[Fireicee1]

I already had the guest additions installed. And forgive me for asking a (probably) silly question, but what does TTY stand for?

[Perryg]

That would be a terminal window TTY
Did you install the guest additions or were they the ones that came with the Ubuntu install?
The VirtualBox GAs have the framebuffer fixed for this. Not sure that the ones from Ubuntu have it.

[stefan.becker]

TTY means a terminal in the guest. Command Line, Shell, ..