First, sorry for my bad English but I am French :) .
I have a X300-14N Toshiba laptop with this configuration :
3 GPU : 1X 9400M GT and a SLI with 2X 9800M GTS
Intel Q9000 Core2Quad
2X 320GB SATA HDD
In USA you have the equivalent with X305-706 and X305-708 but the HDD and the Q9000 change (one have a Core2Duo and one a SSD)
I have a Dual Boot with Windows Vista 64B and Ubuntu 8.10 64bit
Currently I can start the X server if I configure my xorg.conf to specify the BusID of my 9400M GT.
If I specify one 9800M GTS I cant start ubuntu : No screen Found.
I cant disable the Hybrid SLI in my BIOS.
With lspci | grep "VGA" I have :
02:00.0 VGA compatible controller: nVidia Corporation Device 0628 (rev a1)
04:00.0 VGA compatible controller: nVidia Corporation GeForce 9400M G (rev b1)
but in the Nvidia-setting I can see (I have the 180.11 nvidia driver) :
9400M GT BusID: 4:0:0
9800M GTS 1 BusID: 3:0:0
9800M GTS 2 BusID: 2:0:0
This is my DSDT.dsl : http://www.megaupload.com/?d=IB3RRUCY