I'm working on setting up a system with a little mini-itx board. I need it to clone onto 2 screens, and this thing is encrusted with ports.. (svideo, dvi, hdmi, vga).. I assumed it would be easy.

When I plug in anything to this machine, a basic xorg will spit video out onto vga, hdmi and dvi just fine, but only one at a time. There seems to be some kind of hierarchy where one output disables another.

In the past, I've built this kind of thing with a custom written xorg.config but the systems always had multiple video cards. (one on board and one in a slot)

Would on board video capable of multi-monitor support show up in lspci as multiple devices? Or should I be trying to build an xorg that has monitors and screens that share a device section?

Here's my lspci:

Code:
00:00.0 Host bridge: nVidia Corporation Device 0a82 (rev b1)
00:00.1 RAM memory: nVidia Corporation Device 0a88 (rev b1)
00:03.0 ISA bridge: nVidia Corporation Device 0aad (rev b2)
00:03.1 RAM memory: nVidia Corporation Device 0aa4 (rev b1)
00:03.2 SMBus: nVidia Corporation Device 0aa2 (rev b1)
00:03.3 RAM memory: nVidia Corporation Device 0a89 (rev b1)
00:03.5 Co-processor: nVidia Corporation Device 0aa3 (rev b1)
00:04.0 USB Controller: nVidia Corporation Device 0aa5 (rev b1)
00:04.1 USB Controller: nVidia Corporation Device 0aa6 (rev b1)
00:06.0 USB Controller: nVidia Corporation Device 0aa7 (rev b1)
00:06.1 USB Controller: nVidia Corporation Device 0aa9 (rev b1)
00:08.0 Audio device: nVidia Corporation Device 0ac0 (rev b1)
00:09.0 PCI bridge: nVidia Corporation Device 0aab (rev b1)
00:0a.0 Ethernet controller: nVidia Corporation MCP79 Ethernet (rev b1)
00:0b.0 IDE interface: nVidia Corporation Device 0ab4 (rev b1)
00:0c.0 PCI bridge: nVidia Corporation Device 0ac4 (rev b1)
00:10.0 PCI bridge: nVidia Corporation Device 0aa0 (rev b1)
00:15.0 PCI bridge: nVidia Corporation Device 0ac6 (rev b1)
00:16.0 PCI bridge: nVidia Corporation Device 0ac7 (rev b1)
00:17.0 PCI bridge: nVidia Corporation Device 0ac7 (rev b1)
00:18.0 PCI bridge: nVidia Corporation Device 0ac7 (rev b1)
03:00.0 VGA compatible controller: nVidia Corporation Device 087d (rev b1)
As you can see, I'm pretty sure the only thing I've got is the last line.

The other symptom I've got is that xrandr -q does nothing but "Can't open display"

any ideas?