[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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 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. :(


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
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
 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

- 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.


[1] mailto:davidtecher@xxxxxxxx

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.