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[Xen-users] VGA Passthrough on laptop IGD


 I'm new to XEN and I'm starting my search for a VT-d enabled laptop.
Just for my personal curiousness, I'd want to try Qubes-os but I'd also appreciate a Windows HVM guest in which could watch my fullHD videos/youtube and so on, with full hardware acceleration.

I know XEN is continuosly improving, but I found a lot of outdated documentation and I'm not sure if VGA passthrough is possible or not on a laptop with only the integrated GPU (haswell, i3-4010u processor).

http://wiki.xen.org/wiki/Xen_VGA_Passthrough states "Status for Xen 4.0.0: VGA passthru is known to work with Intel Integrated Graphics Devices (IGDs)"

Yeah, I'm happy! But...Xen 4.0.0 has been released on 2010, right? So, if the IGD passthrough is a feature of xen 4.0.0, after 5 years I shouldn't encounter any problems to use it! Everything will work for sure!

So, why on the net there are people telling that vga passthrough is possible only with a second vga (ATI or nvidia quadro) ????? I do not understand why many people is telling that with a single IGD is tricky and is better to give it up? Is there something that I do not know? I have no problems to recompile a kernel or build a headless system, so why passing through the primary (and only) vga should be a problem?

Moreover I can't understang why many people says to use an ATI gpu...?!?! Is it different between xen/qemu/vmware maybe?

Anyway, my choice should be the Lenovo Yoga 2 13", it has an i3-4010u. Anyone tried it?

Many thanks

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