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

["Singapore Citizen Mr. Teo En Ming (Zhang Enming)" <singapore.mr.teo.en.ming@gmail.com>]

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@gmail.com> 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@gmail.com> 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@gmail.com> 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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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)