So far I am only testing how systemd behaves in my system and what
changes I need to do before I permanently make the switch.
So far the first problem, which doesn't seem to be covered in the wiki,
forum or google searches, is that if I switch to a tty after starting X
I get just a blank screen. I also get a blank screen and no prompt after
I logout from the DE.
The conditions that seem to trigger the problem are:
I don't use any login managers so I use startx to start my DE of choice
I have increased the number of available ttys as described here  and
after booting everything seems to be working fine, since I have the
expected number of ttys and I can login at each one of them.
Getting local permissions was also taken care of by following , for
testing purposes I use 'startx -- vt1 &> xlog.log' and I've confirmed
that it works as expected.
After starting X, if I switch to any of the ttys with ctrl-alt-f* I get
only a blank screen, this includes the ttys that have not been used to
After logging out of the DE I get a blank screen at all ttys, including
the one used to start X. The machine is otherwise still responsive.
Any clues, tips or pointers on how to get this to work are welcome.