That's interesting. It does also occur when I start and halt X11, but just switching through terminals without ever starting X11 already does the trick.
I was planning on trying it on real hardware soon anyway. Until then VirtualBox works well enough for me to get a little more familiar with the system.
Thanks for your quick answers!
Here's a before-after screenshot just for the sake of completeness.
I just have to boot, press [CTRL]+[ALT]+[F1-3] a couple of times...and voilĂ :