[vfio-users] VGA passthrough on a ultrabook

[János Horváth]

Hi,

Have a look at KVMGT
<https://01.org/igvt-g/blogs/wangbo85/2016/ntel-gvt-g-kvmgt-public-release-q22016>.
It has the capabilities to share the Intel card with the VM. It is also
possible to decide which output (host or VM) you want to see on the
display/output, so that is solved too.
I have tried to passthrough the NVIDIA card, but without much success. You
can read more here
<https://www.redhat.com/archives/vfio-users/2016-July/msg00047.html>.
(TL;DR: the NVIDIA card is passed through but I cannot install the driver
and subsystem ID is 00000000, so it is probably a failed initialization or
something like that)
It seems to me that the BIOS of the machine must contain some proprietary
magic in order to have Optimus working. I don't know how is it or even if
it is even possible to port from the laptop's BIOS.

Regards,
János

On Fri, Jul 29, 2016 at 9:22 AM Drazen Leovac <drazen.leovac at gmail.com>
wrote:

> Damn.
>
> I guess the only thing left is ordinary VM without any chance of VGA
> passthrough? Am I right?
>
>
>
> On Fri, Jul 29, 2016 at 9:11 AM, Quentin Deldycke <
> quentindeldycke at gmail.com> wrote:
>
>> This is not possible.
>>
>> Optimus laptop? No output is linked to the Nvidia card, it output on a
>> virtual framebuffer the Intel can read.
>>
>> Forget about it :)
>>
>> On 29 Jul 2016 9:09 a.m., "Drazen Leovac" <drazen.leovac at gmail.com>
>> wrote:
>>
>>> Hi guys!
>>>
>>> Just need few tips where to start.
>>>
>>> I have this ultrabook
>>> <https://www.asus.com/us/Notebooks/ASUS-ZenBook-UX303UB/specifications/>
>>> (mobile i7 skylake 6500u, 12gb of ram, ssd, intel hd520 on board + nvidia
>>> 940m graphics) and I would like to create a VM with VGA passthrough so I
>>> can virtualize WIN OS (probably 7 or 8.1) with an option to run VM on my
>>> laptop display and on the external monitor via Display Port (only one of
>>> them will be active at the time. I'm not trying to have active both of
>>> displays).
>>>
>>> Please, tell me if anyone of you tried to do this kind of thing on a
>>> mobile platform and how successful it was?
>>>
>>> Thanks for reading!
>>>
>>>
>>> --
>>> Best,
>>>
>>> Drazen
>>>
>>> _______________________________________________
>>> vfio-users mailing list
>>> vfio-users at redhat.com
>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>
>>>
>
>
> --
> Lp,
>
> Drazen
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>
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