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Re: [Xen-users] VGA passthrough problems with GeForce GTS 250 and P7Q57-

To: Andrew Warkentin <andreww591@xxxxxxxxx>
Subject: Re: [Xen-users] VGA passthrough problems with GeForce GTS 250 and P7Q57-M DO (also: LGA1156 boards with working VT-d)
From: "Mr. Teo En Ming (Zhang Enming) 张恩鸣 of Singapore" <space.time.universe@xxxxxxxxx>
Date: Sat, 18 Sep 2010 13:30:46 +0800
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, zhang_enming@xxxxxxxxxxx, "teoenming@xxxxxxxxxxx" <teoenming@xxxxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>, "space.time.universe@xxxxxxxxx" <space.time.universe@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Dear Andrew,

I have briefly glimpsed through the technical specifications of your ASUS motherboard.


At present, Xen 4.0.1 only supports Intel integrated graphics (IGD) VGA passthrough. Add-on PCI Express x16 graphics cards are not supported yet. Patches, which are currently unavailable, have to be applied to Xen 4.0.1. You may wish to passthrough your onboard VGA instead of your NVIDIA GeForce GTS display card.

I am getting stability issues in VGA passthrough with Intel integrated graphics (IGD), Xen 4.0.1, and pv-ops dom0 kernel on my Intel Desktop Board DQ45CB. Windows XP HVM domU crashes with a BSOD within 2 minutes after booting up.

Please try out Intel integrated graphics (IGD) VGA passthrough and let me know whether you encounter any stability issues (Xen 4.0.1).

Thank you.

Yours sincerely,

Mr. Teo En Ming (Zhang Enming) 张恩鸣 Dip(Mechatronics) BEng(Hons)(Mechanical 
Citizenship: Singapore Citizen/Singaporean
Facebook account: Teo En Ming (Zhang Enming)
Facebook link: http://www.facebook.com/profile.php?id=100000750083982
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ZIP: 470103
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August 2010):-
Photo of Mr. Teo En Ming (Zhang Enming) 张恩鸣 of Singapore: 

On 09/18/2010 12:08 PM, Andrew Warkentin wrote:
I am trying to pass an eVGA GeForce GTS 250 to a Windows XP 32-bit
domU. I am using an ASUS P7Q57-M DO motherboard (with the BIOS updated
to the latest version) with a Core i5-660 processor. I am using the
current unstable version of Debian as dom0 (kernel version
2.6.32-5-xen-amd64), with the current Debian unstable package of Xen
4.0.1. When I boot the XP domU with graphics passthrough enabled,
nothing happens (the domU starts up, but all I see are the last boot
messages from Xen).

I also tried passing through the onboard audio adapter to Windows XP,
and the driver loads and recognizes the adapter, but actually playing
sounds doesn't appear to work. I am not sure if the graphics
passthrough failure is related to the problem with the onboard audio
(and therefore a motherboard/CPU problem), or if it has to do with the
graphics card itself. I know that some NVIDIA cards require Xen
patches to be passed through, but I am not sure where to find patches
that will work with Xen 4.0.1 (the ones that I found were from August
2009, and I get failed hunks when I try to apply them to Xen 4.0.1).

Does anybody know if there are vBAR=pBAR patches available for Xen
4.0.1 (or if they have been integrated into the current Xen
development tree)? Alternatively, if this is a motherboard problem,
does anybody know of any LGA1156 motherboards that definitely have
working VT-d?

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