Re: [Xen-users] Xen VGA Passthrough - GTX 480 successfully quadrified to quadro 6000 (softmod) - more than 4GB of RAM for Win XP 64 Bits

[Gordan Bobic <gordan@xxxxxxxxxx>]

On Wed, 18 Sep 2013 16:08:04 +0100 (BST), David TECHER 
<davidtecher@xxxxxxxx> wrote:
> First time I used 'nvflash --straps' I just changed my (or mask 0)
> value. So only one hex value was updated!
>
> After that I played Crysis. Crysis crashed at startup
>
> 2nd time I reused the command 'nvflash --straps' setting (or mask 1)
> value to its new value. It fixed the problem for Crysis
The mask order is AND1 OR1 AND2 OR2. You shouldn't need to touch
anything in AND2 and OR2. It is only AND1 and OR1 that contain
the bits that you should be changing in this case. The second
set of straps affects other things that you almost certainly
shouldn't be changing unless you know specifically what you
are aiming to do.

So I cannot quite figure out what you are referring to here. :(

Gordan

> I should be able to do a few tests for Linux when I am back to home.
>
> -------------------------
>   DE : Gordan Bobic
>  Ã : David TECHER
> CC : xen-users@xxxxxxxxxxxxx
>  ENVOYÃ LE : Mercredi 18 septembre 2013 16h50
>  OBJET : Re: [Xen-users] Xen VGA Passthrough - GTX 480 successfully
> quadrified to quadro 6000 (softmod) - more than 4GB of RAM for Win XP
> 64 Bits
>
>  On Wed, 18 Sep 2013 15:35:44 +0100 (BST), David TECHER
>   wrote:
> > > Can you just clarify something here - you got the GTX480 to work
> > >with secondary passthrough on a VM with GeForce drivers BEFORE you
> > >modified it into a Quadro? Or am I misunderstanding this?
> >
> > No I was not able to do that.
>  In that case:
>
>  1) What modification had you already applied when Crysis crashed at
>  startup?
>  2) What further modification was required to fix the problem?
>
> > For temperature problem:
> >
> > - VM = Windows XP, Windows 7. There is no temperature problem while
> > playing native Windows games. I played Crysis 2 and no temperature
> > problem.
> >
> > - VM = Linux. This issue occured with this card when playing native
> > Windows games using Wine.
> >
> > So it occured only for Linux (VM)
>  Aha! Now I understand! So either the fan control in Linux is broken
>  or the Windows driver does some temperature management throttling
>  that the Linux driver doesn't. Have you tried manually setting
>  the fan speed to maximum? I could have sworn there were Linux
>  utilities for this ages ago, but I haven't really kept up with
>  things because I haven't looked into it recently.
>
>  What temperature were you hitting on the GPU? IIRC Nvidia GPUs
>  are rated to 95C, and only throttle after that (or at least that
>  was the case back when I was running number-crunching on multiple
>  9800GX2 cards.
>
>  Gordan
>
>
>
> Links:
> ------
> [1] mailto:davidtecher@xxxxxxxx

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