Dear Tobias Geiger,

You mean my problem cannot be solved at all (as regards to the yellow 
exclamation mark with NVIDIA Geforce 8400 GS and CANNOT run 3D graphics 
benchmarks)? I _DO NOT_ have this problem back when I was doing Xen VGA 
Passthrough to Windows XP HVM domU with Xen 3.5-unstable. Yes, 3 years 
ago, back in the year 2009, with Xen 3.5-unstable. Back when Han Weidong 
was still around in Intel Corporation.

I am surprised that you are unable to open my Xen VGA Passthrough 
Version 1.6 PDF documentation. I have tried opening the file attachment 
myself and it is not empty.

To solve the problem with your email client, I am providing the Xen Wiki 
link to my Xen VGA Passthrough Version 1.6 PDF documentation.

Xen WIKI link: 
http://wiki.xen.org/wiki/Xen_VGA_Passthrough_to_Windows_8_Consumer_Preview_64-bit_English_HVM_domU_and_Windows_XP_Home_Edition_SP3_HVM_domU_with_Xen_4.2-unstable_Changeset_25070_and_Linux_Kernel_3.3.0_in_Ubuntu_11.10_oneiric_ocelot_amd64_Final_Release_Dom0

You can also watch a Youtube video of my partially successful Xen VGA 
Passthrough to Windows 8 Consumer Preview HVM virtual machine.

Xen WIKI link: 
http://wiki.xen.org/wiki/Video:_Xen_VGA_Passthrough_to_Windows_8_and_Ubuntu_11.10_with_Xen_4.2_and_Kernel_3.3

Please do help to read through my Xen VGA Passthrough Version 1.6 
documentation to see if there are any mistakes, *_ESPECIALLY MMIO BARS 
pBAR:vBAR 1:1 mapping._*

Thank you very much for your prompt response and kind assistance.

-- 
Yours sincerely,

Mr. Teo En Ming (Zhang Enming)
Singapore


On 27/03/2012 18:26, Tobias Geiger wrote:
> Dear Teo,
>
> your problem is "known". unfortunatly no "known" solution exists.
> of course you can try to find one - but that involves much try-and-error on
> your side.
> The "easy" solution would be: replace your NVIDIA card with a recent ATI one.
>
> Besides the fact that i can't open your PDF (empty file...) it's really really
> annoying - for various reasons; first: nobody can edit the PDF except you.
> second: now your pdf is stored in thousands of mailboxes in various versions -
> if it were a wiki-article or anything else web-based, it would be there only
> once. i love things which have a definite place...
> please consider the suggestion many others already made to bring your good
> intended documentation effort to a technical state and place where everybody
> has the maximum profit of it: WIKI
>
> Thanks and Greetings to Singapore!
> Tobias
>
> Am Dienstag, 27. März 2012, 11:48:25 schrieb Teo En Ming (Zhang Enming):
>> Dear Tobia Geiger and Xen users and developers,
>>
>> My Xen VGA Passthrough to Windows 8 Consumer Preview and Windows XP HVM
>> domU is only *_partially_* successful. There is a yellow exclamation
>> mark besides NVIDIA Geforce 8400 GS in Device Manager. Device Manager
>> reports:
>>
>> Windows has stopped this device because it has reported problems. (Code 43)
>>
>> This device isn't using any resources because it has a problem.
>>
>> I suspect the above problem has to do with MMIO BARs pBAR:vBAR 1:1 mapping.
>>
>> Could you read through my attached "Xen VGA Passthrough - Version
>> 1.6.pdf" documentation carefully to see if there are any mistakes in
>> this area? Of concern are Sections 3, 4, and 6 in my Xen VGA Passthrough
>> documentation.
>>
>> I am using Xen 4.2-unstable changesets 25070 and 25099 and Linux Kernel
>> 3.3.0.
>>
>> Thank you very much for your kind assistance.
>