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Re: [Xen-users] [Xen-devel] Xen VGA Passthrough - GTX 680 successfully hard-moded to GRID K2

On Mon, Sep 23, 2013 at 07:53:12PM +0100, Gordan Bobic wrote:
> On 09/23/2013 06:28 PM, David TECHER wrote:
> >Hi Gordan,
> >
> >I wanted to let you know that today I decided to have a try for my GTX
> >680. Gigabite GTX 680 2048 MB GDDR5.
> >
> >I know that this particular card could be hard-moded to GRID K2 so VGA
> >passthrough could work.
> FYI, GTX680 modified to a K5000 also works fine for VGA passthrough. I
> haven't noticed any difference in the functionality.
> >Following instructions found on
> >http://www.eevblog.com/forum/chat/hacking-nvidia-cards-into-their-professional-counterparts/420/
> >I just removed two resistors.
> Just out of interest - are your video outputs working correctly? Can
> you get DL-DVI output or DP output without problems? I find that on
> bare metal, it works fine, but in a Xen VM, SL-DVI works, but DL-DVI
> doesn't. DP also works on bare metal, but doesn't work at all domU.
> As far as I can tell, nobody has had the same issue before. Then
> again, AFAIK, nobody else is running this setup with an XP64 domU,
> which is why I am particularly interested to hear if you are seeing
> the same issue (you mentioned you also run XP64).
> >I did the test on another VM (Windows 7 64 bits).  I was able to play
> >games, shutdown the VM, restart the VM without restarting the dom0.
> >
> >I am very impressed. Restarting domU (Linux or Windows) without
> >restarting the dom0 is very impressive.
> Indeed. As I have mentioned a number of times before, a faux-Quadro
> setup is far, far superior to an ATI setup when it comes to VGA
> passthrough.
> And I wouldn't say it's impressive per se - it is normal and
> expected. OTOH, having to reboot dom0 when rebooting domU is utterly
> broken and unfit for purpose.

I am a bit late to this part - was there an serial output or some other
way to figure out why dom0 rebooted?

> Gordan
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