Re: [Xen-devel] VGA passthrough nVidia NVS 295

[Helmut Wieser <helmut.wieser@xxxxxxxx>]

Hi,

Yep, I used a free-dos USB stick for that. That brought back memories! ;-)
I tried several kernels, none work fine. And then there is also the 
netback_uevent issue, which makes me reboot dom0 in order to reboot a 
domU. Very annoying!
Can you post your kernel version and config?
What chipset/gfx card do you use?

regards,
Helmut

On 04.06.2010 16:09, Tobias Geiger wrote:
> Hi,
>
> i never tried passing vga through to a linux domU, sorry.
> but with winxp i have no stability problems whatsoever - which may back up
> your suggestions that either your xen/kernel combo is unstable or your
> hardware is.
>
> did you read out the vgabios for qemu-dm correctly (vgabios-pt.bin) ?
>
> Greetings
> tobias
>
> Am Freitag 04 Juni 2010 15:07:55 schrieb Helmut Wieser:
>    
> > Hi Tobias,
> >
> > Yes, I get the exact same error. Googling didn't reveal much. I don't
> > get this error in Windows XP though, but I do get other issues.
> > None are concise, so I think my Xen / Kernel version combo is unstable,
> > or my hardware is.
> > I'm running on a Intel 5520 chipset with dual E5620 Xeon and a Nvidia
> > Quadro NVS 295, G98.
> >
> > Were you more successful in passing through to a Linux domU?
> >
> > The chipsets and CPUs are well supported, only the graphics card didn't
> > show up anywhere.
> >
> > regards,
> > Helmut
> >
> > On 03.06.2010 15:47, Tobias Geiger wrote:
> >      
> > > Hi Helmut,
> > >
> > > i had the same experience with my setup regarding windows7.
> > > The good news is, there are no such problems with winxp.
> > >
> > > Disabling the "Timeout Detection and Recovery (TDR)" Feature in the win7
> > > registry doesn't help for my nvlddmkm.sys BSOD, but if i interpret the
> > > countless google hits regarding  "nvlddmkm.sys 0x00000116" (the
> > > Error-Code that always appears in the win7 BSOD - is yours also always
> > > the same?), it's hard to come to a solution:
> > > Some say its a driver-issue, memory timings, powersupply unit... OTOH it
> > > may be that Windows 7 is using a feature winxp doesnt, and which doesn't
> > > get passed through correctly.
> > >
> > >
> > > Greetings
> > > Tobias
> > >
> > > Am Mittwoch 02 Juni 2010 13:04:10 schrieb Helmut Wieser:
> > >        
> > > > I want to try to get VGA passthrough working in a Windows 7 x64 domU.
> > > > I'm running debian squeeze/testing/unstable with Jeremy's 2.6.32.x
> > > > kernel. The best I got to work is the device showing up under Windows 7,
> > > > with all resources and whatnot.
> > > >
> > > > I've applied the vga-loadbios patch and vBAR-pBAR patch to xen, and the
> > > > vBAR-pBAR patch to qemu-dm.
> > > >
> > > > This behaviour isn't stable though. Sometimes I can log on and then domU
> > > > crashes with a BSoD (nvlddmkm.sys). Sometimes I can log on and actually
> > > > do something. But certain operations, like changing display options or
> > > > checking device manager details cause a BSoD.
> > > >
> > > > The NVS 295 is based on a G98, which isn't to dissimilar from Eming's
> > > > GeForce 8400GS. He only states he used 2.6.30-rc3 with some upstream
> > > > patches, but not more.
> > > >
> > > > Has anyone succeeded in passing thru an nVidia graphics card to a
> > > > Windows 7 x64 guest?
> > > > Should I try Windows XP, would that make a difference?
> > > >
> > > > regards,
> > > > Helmut
> > > >
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