port-amd64/43033: X -configure hangs in VirtualBox

[trondsg%gmail.com@localhost]

>Number:         43033
>Category:       port-amd64
>Synopsis:       X -configure hangs in VirtualBox
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 21 15:50:00 +0000 2010
>Originator:     Trond
>Release:        amd64 5.0.1
>Organization:
>Environment:
NetBSD  5.0.1 NetBSD 5.0.1 (GENERIC) #0: Thu Jul 30 00:08:07 UTC 2009  
builds%b7.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-1-RELEASE/amd64/200907292356Z-obj/home/builds/ab/netbsd-5-0-1-RELEASE/src/sys/arch/amd64/compile/GENERIC
 amd64
>Description:
After installing NetBSD in Sun VirtualBox under Windows:
When typing startx at a fresh netbsd installation, X appears, but the mouse 
doesn't work.
When typing X -configure (or Xorg -configure), the screen turns black and the 
VM hangs.
After rebooting, ~/xorg.conf.new (generated by X -configure) is filled with @ 
characters when viewed in vi.
>How-To-Repeat:
1. Install NetBSD in VirtualBox with all X sets
2. Login as root
3. Type X -configure
>Fix: