No virtual ttys

[Georg Denk]

Dear all,

my laptop (Asus K52JC, Intel graphics, Ubuntu 10.04) does not give me
a virtual tty when I enter ctrl-alt-F1 (or F2..F6). The result is just
some distorted picture of the desktop. Switching back to X11 via
ctrl-alt-F7 restores the screen again and I can continue.

I'm missing these virtual ttys (e.g. when I need to switch to a
different run level).

Any hints?

Many thanks in advance,

Georg