Re: [Xen-users] vga passthrough help needed.

[Donald van der Wurf <d.vander.wurf@xxxxxxxxx>]

My hardware supports vt-d without a doubt because i am able to passthrough other devices without a problem but still i can't get vga passthrough to work.

Als tried a windows 8 dom-u now. 

- built the dom-u without passhtrough first. Windows 8 runs like a charm. 

- then i add the pci devices. Windows detects the ATI Mobility Radeon HD 5000 Series and uses the built-in WDDM v1.20 driver, but cannot start the device (Code 10) in device manager. 

- i see the passthrough HD Audio device without exclamation mark. 

- i see the passthrough usb devices, and can plug in a usb stick and copy files from it. 

- then i installed the current catalyst driver package 12.8 for win8, and the vm  hangs during installation. 

Still i am thinking about if my hardware is the root cause? it's not on the supported list, and i read a lot of things about finding the right hardware combination to get it working. Especcialy on esx (didn't work for me), xenserver (also no success) and now Xen which also doesn't seem to work. 

So are there any people out there who use my hardware, and got it working? (motherboard, cpu and gpu?). 

 

2012/10/12 Ricardo Jesus <ricardo.meb.jesus@xxxxxxxxx>

Hi,

I have a similar GPU PowerColor Go! Green HD5450 1024MB DDR3 PCIEx16
and it sure does support VGA/PCI passthrough on Ubuntu 12.04 LTS and
Windows 8 Preview/Consumer and lspci -vv outputs exactly the same
string.

A quick Google search does identify both CPU and motherboard has
having VT-d support on manufacturer homepages. So in terms of hardware
you're pretty much ok.

However I'm using Debian Wheezy, distro's Xen 4.1.3, kernel 3.2.0 and
3.5-trunk, xm toolstack and pci-stub. However I'm unable to
successfully passthrough using pciback.

Haven't tried Windows 7 though.


Best regards,
Ricardo Jesus.

On Thu, Oct 11, 2012 at 10:26 PM, Donald van der Wurf
<d.vander.wurf@xxxxxxxxx> wrote:
> Hi Xen community,
>
>
> I've been playing with gpu passthrough for a while now, without success, so
> i'm starting to think that my hardware is the problem.
>
>
>
> My config:
>
> Motherboard: supermicro x9scl+
>
> CPU: Intel® Xeon® Processor E3-1230 V2
>
> Memory: 32GB ECC
>
> GPU: PowerColor Go! Green HD5450 512MB DDR2 PCIEx1.
>
>
>
> http://wiki.xen.org/wiki/VTd_HowTo
>
> Only devices with FLR capabilities are supported.
>
>
>
> so did the lspci -vv, this gives me the output:
>
>                         ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
>
>
>
> FLReset not supported by my GPU. Hmm, So? Can i forget about it, and get a
> new gpu? or are there any workarounds availble?
>
>
>
> Also i see that my motherboard + cpu is not on the supported list inhere:
> http://wiki.xen.org/wiki/VTd_HowTo
>
>
>
> What hardware could i switch to get a working config? New motherboard, and
> keep the cpu + memory? Only new GPU?
>
>
>
> Running on Xen 4.3 unstable on debian squeeze with custom kernel on linux
> 3.6.1. pciback works  fine. I can add all pci devices to the vm, install the
> amd drivers without problems, but when starting the windows 7 x64 ultimate
> machine after the install it hangs at Starting Windows.
>
> Any tips would be great.
>
>

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