Re: [Xen-users] [Xen-devel] Is my Intel HD Graphics 4600 Xen VGA Passthrough to Windows 8 Enterprise HVM domU Considered Successful?

[Andrew Bobulsky <rulerof@xxxxxxxxx>]

On Fri, Jul 19, 2013 at 7:37 AM, Singapore Citizen Mr. Teo En Ming
(Zhang Enming) <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:
> On 19/07/2013 19:31, Gordan Bobic wrote:
>>
>> On Fri, 19 Jul 2013 19:15:39 +0800, "Singapore Citizen Mr. Teo En Ming
>> (Zhang Enming)" <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:
>>>
>>> On 19/07/2013 19:02, Gordan Bobic wrote:
>>>>
>>>> On Fri, 19 Jul 2013 18:56:24 +0800, "Singapore Citizen Mr. Teo En Ming
>>>> (Zhang Enming)" <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:
>>>>>
>>>>> On 19/07/2013 18:42, Gordan Bobic wrote:
>>>>>>
>>>>>> On Fri, 19 Jul 2013 18:27:07 +0800, "Singapore Citizen Mr. Teo En Ming
>>>>>> (Zhang Enming)" <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> My Windows 8 Enterprise HVM domU configuration is as follows. I have
>>>>>>> to *disable* gfx_passthru, that is, gfx_passthru=0. Please take note.
>>>>>>
>>>>>>
>>>>>> [...]
>>>>>>
>>>>>>> So is my Intel HD Graphics 4600 Xen VGA passthrough to Windows 8
>>>>>>> Enterprise HVM domU considered successful?
>>>>>>
>>>>>>
>>>>>> If it works, it's successful.
>>>>>>
>>>>>>> I cannot enable gfx_passthru, that is, gfx_passthru=1. If I enable
>>>>>>> gfx_passthru, Windows 8 Enterprise HVM domU would start for a few
>>>>>>> seconds, then the LCD monitor would go into power save mode (blank
>>>>>>> screen) *forever*.
>>>>>>>
>>>>>>> Please advise me on how I can get VGA passthrough to work with
>>>>>>> gfx_passthru=1.
>>>>>>
>>>>>>
>>>>>> Can you elaborate why exactly do you need to have that GPU passed
>>>>>> through as primary? Primary GPU passthrough has always been
>>>>>> problematic because domU has to re-post the card's BIOS which
>>>>>> has always been problematic.
>>>>>>
>>>>>> The only difference in the general case is that with gfx_passthru=1
>>>>>> you get to see the POST and boot information on the monitor
>>>>>> connected to the GPU. With gfx_passthry=0 you can only see this
>>>>>> in the VNC session connected to the virtual primary VGA card. In
>>>>>> the vast majority of cases seeing the POST and boot animation
>>>>>> isn't useful enough to be worth bothering with.
>>>>>>
>>>>>> I have a working setup with 2x Quadro cards, each passed through
>>>>>> as secondary (gfx_passthru=0) to different domUs, with separate
>>>>>> mice/keyboards passed through to each domU (multi-seat gaming
>>>>>> rig), and that works lovely (only limitation being 2GB of RAM
>>>>>> for each domU until I get around to upgrading to 4.3).
>>>>>>
>>>>>> Unless you have a very compelling reason to use gfx_passthru=1
>>>>>> I suggest you don't bother even trying.
>>>>>>
>>>>>> Gordan
>>>>>>
>>>>>
>>>>> Dear Gordan,
>>>>>
>>>>> I want to use the monitor connected to Intel HD Graphics 4600
>>>>> directly. I don't want to use a VNC session to connect to the Windows
>>>>> 8 Enterprise HVM domU.
>>>>>
>>>>> Thank you very much.
>>>>
>>>>
>>>> You only need VNC for the POST. Once Windows boots up you should be
>>>> be able to get all your display output on the physical screen.
>>>> Disable the virtual VGA interface in device manager if you have
>>>> to - I've found that is sometimes necessary to get the physical
>>>> GPU working properly.
>>>>
>>>> Gordan
>>>>
>>>
>>> Dear Gordan,
>>>
>>> How do I disable the virtual display adapter in Windows 8 Enterprise
>>> HVM domU? I see nothing on the physical screen at all.
>>
>>
>> Have you tried going into your desktop/resolution settings and
>> extending your desktop to the physical monitor?
>>
>> Gordan
>>
>> _______________________________________________
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>> Xen-devel@xxxxxxxxxxxxx
>> http://lists.xen.org/xen-devel
>>
>
> Dear Gordan,
>
> How do I do that? What are the steps? Please elaborate. Please show me any
> screenshots, if any.
>
>
> Thank you very much.
>
> --
> Yours sincerely,
>
> Singapore Citizen Mr. Teo En Ming (Zhang Enming)


Hello Teo,

I presume that Gordan means this: http://i.imgur.com/8OjstX4.png

While there's probably a dozen ways to access it, most folks generally
right click the desktop and click "Screen Resolution."  I'm sure
you're aware of how to get there though :)

Cheers,
Andrew

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