I looked into this and reported a bug in TRAC. What I found is two separate issues. The first is that the VirtualBox guest kernel module isn't loaded before the system goes graphical. To fix that add this line to /boot/loader.conf:
That should fix any graphics issues.
The second is that the vboxmouse driver (necessary for pointer integration) never gets loaded. There is a HAL configuration that I think should be installed as part of the VirtualBox guest package. You can find it at
towards the bottom. It involves creating a file named 90-vboxguest.fdi in /usr/local/etc/hal/fdi/policy. Its contents should be:
<?xml version="1.0" encoding="UTF-8"?>
# Sun VirtualBox
# Hal driver description for the vboxmouse driver
# $Id: 90-vboxguest.fdi 21412 2009-07-08 21:18:57Z vboxsync $
Copyright (C) 2008-2009 Sun Microsystems, Inc.
This file is part of VirtualBox Open Source Edition (OSE), as
available from http://www.virtualbox.org. This file is free software;
you can redistribute it and/or modify it under the terms of the GNU
General Public License (GPL) as published by the Free Software
Foundation, in version 2 as it comes in the "COPYING" file of the
VirtualBox OSE distribution. VirtualBox OSE is distributed in the
hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 USA or visit http://www.sun.com if you need
additional information or have any questions.
<match key="info.subsystem" string="pci">
<match key="info.product" string="VirtualBox Guest Service">
<append key="info.capabilities" type="strlist">input</append>
<append key="info.capabilities" type="strlist">input.mouse</append>
<merge key="input.x11_driver" type="string">vboxmouse</merge>
<merge key="input.device" type="string">/dev/vboxguest</merge>