Re: [Xen-users] Is there any ATI card, which works with VGA Passthrough and allows rebooting guest?

[Adam Ryczkowski <adam.ryczkowski@xxxxxxxxxxxxxx>]

On 21.01.2014 17:40, Gordan Bobic wrote:
> On 2014-01-21 16:23, Adam Ryczkowski wrote:
> > I'm planning to build a system that allows gaming on domU with
> > VGA-passthrough.
> >
> >  Are there any graphics cards besides few expensive NVidia Quadro
> > models, that are fully compatible with Xen VGA-passthrough, including
> > rebooting the virtual guest?
> >
> >  I'd very much prefer to use ATI family then NVidia, with price <=
> > $500.
> Depends on the performance level you required. IIRC I had
> marginally better luck with the HD6450/7450 card than higher
> spec ones, presumably because it doesn't take auxiliary
> power so putting it to sleep by removing PCIe power
> works on it.
Dear Gordan,

thank you very much for an answer.

Do you mean, that you are actually able to reboot the guest as many 
times, as you want, without any issues?
> If you want to go faster and aren't afraid of a little
> bit of soldering, get a non-Gainward GTX680 and remove
> one resistor to make it into half of a Tesla K10, which
> also works well for VGA passthrough purposes (yes, I
> also use those).
Do you have, by any chance, a link to the photograph describing which 
resistor to remove? As I understand, the "solution" depends on the 
motherboard manufacturer...
I've found tons of these on several forums, but they were about 
modifying GTX 690 into Tesla K10, not GTX 680. Besides, many are poorly 
explained, and I didn't make out precisely if the modification really 
worked.
BTW Why non-Gainwart?


Adam

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