Xen users - Sep 2011 - vga passthrough, Code 10 this device cannot start

Hi all,

I''m running Xen 4.1 using Kernel 3.1 as Dom0 and a Windows 7 HVM guest.
I
have VT-D enabled, and I''m using pci passthrough for an Nvidia Quadro
FX3800M card (currently used as a secondary card with gfx_passthru=0 in my
config file)

I''m able to install Nvidia drivers in Windows 7, but after reboot there
is a
yellow exclamation point in device manager with an error of "Code 10 this
device cannot start" (although device manager does properly display the
Quadro FX3800 name of my card) Some searching shows that this might be
related to an irq issue (Nvidia suggests on their site to check the "assign
irq to vga" but that option isn''t in my motherboard''s
bios.) Has anyone seen
this kind of error before? Thanks!


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