XFree86 uses similar console switching keys as the SCO R4 and R5
servers. That is, Ctrl-PrntScr takes you to the next console along
from the one X is running on. If this is the last console it will take
you to console 1. Ctrl-Alt-FXX, where XX is a function
key between F1 and F12 will switch you to the console
number assigned to that function key. F1 corresponds to
tty01 (or console 1), F2 corresponds to tty02
(or console 2) etc. Those interested in modifying the console switching
should look in xc/programs/Xserver/hw/xfree86/common/xf86Events.c.