X Server 1.7.7 does not recognise BusID

[Unga]

Hi all

I have a laptop running FreeBSD 9.0 and it has two display controllers.

"pciconf -lv" shows following:

vgapci1 at pci0:0:2:0:     class=0x030000 card=0xc0a5144d chip=0x01168086 rev=0x09 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '2nd Generation Core Processor Family Integrated Graphics Controller'
    class      = display
    subclass   = VGA

vgapci0 at pci0:1:0:0:     class=0x030200 card=0xc0a5144d chip=0x0df410de rev=0xa1 hdr=0x00
    vendor     = 'nVidia Corporation'
    device     = 'GF106 [GeForce GT 555M SDDR3]'
    class      = display
    subclass   = 3D            


I need to use the Nvidia display controller and the xorg-7.5.1 and the Nvidia driver (ver. 295.20) is installed in the system.

I have added BusID as follows in the xorg.conf:
Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

But the Xorg still doesn't come up and complain following:
(II) NVIDIA dlloader X Driver  295.20  Mon Feb  6 21:10:33 PST 2012
(II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
(II) Primary Device is: PCI 00 at 00:02:0
(EE) No devices detected.

Fatal server error:
no screens found


GeForce GT 555M is supported by the ver. 295.20 of the Nvidia driver for FreeBSD.

Appreciate very much your help in this regard.

Best regards
Unga