NetBSD-6.0_Beta - No X11 with Xen

[Sad Clouds <cryintothebluesky%googlemail.com@localhost>]

Hi, I've set NetBSD-6.0_Beta amd64 port. I use the following
in /boot.cfg to load Xen:

menu=Xen3:modules enabled;load /netbsd-XEN3_DOM0;multiboot /xen.gz
dom0_mem=1024M console=vga -- console=pc

On boot I have /etc/rc.d/gdm run to start display manager. For some
reason it doesn't come up with Xen, i.e. process is running but there
is no X11.

This used to work on NetBSD-5.1 simply with 

menu=Xen3:load /netbsd-XEN3_DOM0;multiboot /xen.gz dom0_mem=1024M

I've been playing around with console= parameters, but just can't get
it to work. Any ideas?