Having problems configuring X. from terminal with NVIDIA.
 

root@AMDX6CORE:~# Xorg -configure
_XSERVTransSocketCreateListener: failed to bind listener
_XSERVTransSocketINETCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: failed to create listener for inet
Warning: getifaddrs returns Invalid argument
libudev: udev_monitor_new_from_netlink_fd: error getting socket: Invalid argument
[config] failed to pre-init udev

X.Org X Server 1.15.1
Release Date: 2014-04-13
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.2.0-76-generic x86_64 Ubuntu
Current Operating System: Linux AMDX6CORE 3.4.0+ #1 PREEMPT Thu Aug 1 17:06:05 CST 2013 x86_64
Kernel command line: BOOT_IMAGE=/kernel roBuild Date: 12 February 2015 02:49:29PM
xorg-server 2:1.15.1-0ubuntu2.7 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.30.2
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat May 21 03:39:19 2016
List of video drivers:
ati
cirrus
vmware
intel
mach64
mga
modesetting
neomagic
nvidia
openchrome
qxl
r128
radeon
s3
savage
siliconmotion
sis
sisusb
spiceqxl
tdfx
trident
vesa
fbdev
xf86EnableIOPorts: failed to set IOPL for I/O (Function not implemented)
No devices to configure. Configuration failed.
(EE) Server terminated with error (2). Closing log file.
root@AMDX6CORE:~#

How can I encourage X to use Dual(2x) monitors @ 1920x1080x32.
I also want to use the Vulcan cross platform libraries for SteamPowered 3D graphics support and development.

1. What graphics card you have?
2. Have you installed the nvidia driver?