This is why I stuck with the T60p: at least you can get a V5200 card for the Advanced Dock.
subterFUSE, My opinion is that if you want both internal and external displays to operate simultaneously, you're better off setting the BIOS to boot to the internal and then letting the OS bring up the PCI-E card.
Rex_Mason, the Matrox PDF described installing XDDM drivers in Vista, which will disable Aero. I haven't played with this too much, but it seems to me that if you do this, you may as run XP and be done with it. You can freely mix video drivers in XP, but not in Vista (at least not yet).
If you can find a video card that uses the same driver between the 140M and 440 chips, you should be good to go. It sounds like, from your post, that those chips, while from the same family, still don't use the exact same driver. You might try LaptopVideo2Go for other driver options, but you're definitely going down a road I haven't gone down with the T61/140M.
You can reference my troubleshooting on this issue here:
http://forums.lenovo.com/lnv/board/mess ... read.id=41
I do not want to use internal and external graphics simultaneously. All I want is to be able to dock and use my four desktop monitors. I tried LaptopVideo2Go months ago, and they don't have a driver that works for the Quadro NVS 140M and 440 simultanously. In fact, nVidia doesn't release the drivers for OEM installed graphics cards in laptops on their own website. You must go through the manufacturer, ie Lenovo in this case.
My conclusion is that the T61 & Advanced Dock does not work with any PCI Express graphics cards.
After I complained to Lenovo, they upated their documentation on the Advanced Dock. You can see that here, and note the updated date on the bottom of the page as 2007-12-12.
http://www-307.ibm.com/pc/support/site. ... MIGR-61232
Now the documenation includes graphics card compatibility which shows that the T61 will not work with the one card they suggest. Check out the compatibility matrix, T61 is conspicuously absent.
But this information was not available when I purchased my T61 and Advanced Dock. Lenovo claimed that a standard height, half length card would work. I have tried three different cards now, and none of them will work. I have also tried both Vista and XP Pro, and still no success. I used their false information on the dock to make large purchase decisions. I bought their laptop, dock, four external monitors, and now three different graphics cards. I have spent thousands of dollars and lost countless hours of time troubleshooting. Lenovo tech support has been no help.
I caution anyone considering a Lenovo purchase to avoid the Advanced Dock. It does not perform as it should.