nixCraft

Normal text based vcs are manipulated and control via /etc/inittab file
but it does not offers any way to modify local X displays. By default
when I hit CTRL+ALT+F7 I get default KDM login. And CTRL+ALT+F1 to F6 as
defined in /etc/inittab for text based VCs. I would like to set up the
graphical login manager KDM to run on two different screens when you
boot the computer. So when I press CTRL+ALT+F7default KDM should be
there and when I press CTRL+ALT+F8 I should see another KDM login

Thanks in advanced

Not just double it, but you can add three or four login screen as per
your wish

Find out the file Xservers (usually located in /etc/X11/xdm dir) and add
entry

:1 local /usr/X11R6/bin/X vt8 -dpi 100 -nolisten tcp

It will add line KDM display to vt8; so that when you hit CTRL+ALT+F8
you should see the KDM login

Don't forget to reboot the system to see changes or switch to init 3
and then again init 5; but easiest way is to reboot your linux system