Hello all,

I have a Dell Optiplex 780 which supports VT-D, and I'm trying to get my Sapphire Radeon HD5450 to work with vmdirectpath.

As far as I can tell, there are no issues passing the device through to the (Windows) VM guest. With no drivers installed the guest boots fine and can see the device, the ATI setup program and windows itself recognise the PNP IDs, and match the 5400 series driver accordingly.

However, once the drivers are installed,  I get a BSOD with an ATI DLL "driver in infinite loop" on restarting.

No errors within ESXi/VI client.  I have the memory reservation matching the allocated memory, and it's <2GB.   The ESXi console video signal drops on VM boot as expected.

What is the best strategy for me here - should I shop around for other video cards to try?  is there any merit in trying a radeon 4550?

Or are there any other ways I can work around the ATI driver issue with some other drivers perhaps?

thanks for any ideas