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

[Tobias Geiger <tobias.geiger@xxxxxxxxx>]

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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> >
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