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Re: [Xen-users] VGA Passthrough of AMD FirePro W7000 to Windows 8: Not enough resources

On 10/02/2013 02:14 PM, Toby Miller wrote:

On 02/10/13 01:05, Andrew Bobulsky wrote:
On Sep 30, 2013, at 8:26 AM, Toby Miller <tobycmiller@xxxxxxxxx
<mailto:tobycmiller@xxxxxxxxx>> wrote:

I'm using Xen 4.3, installed from source on Ubuntu 13.04. I've
successfully installed a Windows 8 guest, and had Xen pass it an AMD
FirePro W7000 GPU (technically 2 PCI devices - the second is for the
sound), as well as the virtualised graphics adapter. Windows finds
the card fine, and I've installed AMD's drivers. Device Manager says
that the card cannot find enough resources (code 12). I've checked
the IO, IRQ, and Memory details in DM, and there don't seem to be any

I did try disabling the virtualised card from Windows, but it seemed
to keep using it anyway, even after a restart. It didn't make any
difference to the FirePro in any case.

I'd be grateful for some help.

Many thanks,


Hello Toby,

I can't say whether or not it will help at all, but if your problem
relates to IRQ issues, it may help to try turning on/off MSI
translation for the device, or possibly changing its virtual slot

The syntax for changing these options in your domain's cfg file can be
found here: http://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html#devices


Thanks for your help. I've managed to get it booting now, although the
host crashes all the time. I've tried turning on MSI translation but
that doesn't seem to make much diference. Details are in my reply to

1) Check lspci and make sure nothing is sharing the passthrough GPU interrupt.

2) You don't need gfx_passthrough=1, I have my VMs running without it as secondary VGA passthrough. BIOS/boot output comes up on VNC, login screen and later come up on the GPU itself. Personally I have up on ATI cards, but my faux-Quadro cards work very well in this kind of a setup.


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