Just continue to call startx - it will call startxfce4 for you.
If it doesn't, try adjusting your display manager to default to xfce.

hth,

herd

AFAICT, you don't get a DM when you start from runlevel 3, and since I don't have
a user .xinitrc, 'startx' calls the system one and gives me 'twm'.

After I posted the original question, I remembered that I used to start xfce4 by listing the individual xfce4
components in .xinitrc, and using 'startx'.  IIRC, that allowed multiple X sessions.

I'll have to see if I still have those notes somewhere around here, somewhere.

I'd been having hopes that 'startxfce4' would handle things properly... guess not... damn. 
.
.

hth,

herd

In the past with other desktop environments, I would do 'startx' to get into a desktop X session,
and could do a 'ctrl-alt-F2' to get another console, then do 'startx -- :1' to get a second X session,
and then 'startx -- :2' for the third, etc.

Starting an xfce4 session, then going to a new console and doing 'startxfce4 -- :1' fails to start a
second xfce4 X session.

How do you start another xfce4 X session from the console?

Thanks
.
.