On Wed, 2013-04-10 at 16:32 -0400, de...@lavabit.com wrote: > >> However, turning gfx_passthru off did > >> the trick. Win7 started loading with cirrus and switched to HD7750 > >> halfway > >> through boot proccess. I didn't do any testing just let Windows > >> calculate > >> its score. The result was 7.4 and Aero was working. > > > > You should be able to do this with vfio too, use -vga cirrus and don't > > use the x-vga option on pci-assign. The x-vga enables legacy VGA > > support for boot and primary console, as a secondary head normal PCI > > device assignment should be sufficient. > > > Oh, how I wish it was true! Trying to load with cirrus and vfio-pci > results in BSOD: > Attemp to reset the display driver and recover from timeout failed.
Is this a fresh windows install? Windows doesn't like change and will BSOD pretty easily when attaching graphics to an existing image. > Trying the old pci-assign with kvm results in non-working GFX. Windows > shows code 10 and sometimes code 43 for the card. What happens if you don't use a q35 machine? Windows is very particular about the PCIe type of a device and will often show Code 10 if it doesn't have a type compatible with a root complex. Alternatively you can use the q35 config in the docs directory with the -readconfig option and the bus= option on the pci-assign device to place the graphics behind a root port. > P.S. I'm starting to go nuts because VGA assignment doesn't work. The > system was built with this sole intention. So, now I'm considering buying > another graphic card. Can you suggest any consumer card that is easy to > pass and can leave through vm resets? This HD7750 just hung the host when > I tried destroying Xen's VM and running it again. Nope, VGA assignment is pretty bleeding edge here, but we've gotta start somewhere. Thanks, Alex
