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[Xen-users] XenServer 6.2 + GPU Passthrough (GF100GL + GF200GL)

  • To: xen-users <xen-users@xxxxxxxxxxxxx>
  • From: Brian Menges <bmenges@xxxxxxxxxx>
  • Date: Tue, 19 Aug 2014 22:11:49 +0000
  • Accept-language: en-US
  • Delivery-date: Tue, 19 Aug 2014 22:13:03 +0000
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  • List-id: Xen user discussion <xen-users.lists.xen.org>
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  • Thread-topic: XenServer 6.2 + GPU Passthrough (GF100GL + GF200GL)

So I've got an HP Z800 running the 1100 W PSU decked out with an ATI 5450 
(local display), Quadro FX 5800 (GPU assigned to a Windows 7 64-bit Enterprise 
instance) and now a Quadro 4000; previously a Quadro 5000.

I've tried passing through either the Quadro 4000 or 5000 to guest VMs and in 
all situations, my entire system just flat out dies (hard lock, no input, no 
display, no warning, no errors, nothing logged). Hard cycle it, system returns. 
This has happened with and without running my Windows VM (which has the FX 5800 
GPU assigned to it).

I've tried this now with Ubuntu 14.04 LTS and 12.04 LTS. Is there a problem 
doing gpu passthrough to a linux vm? Or perhaps a problem doing gpu passthrough 
with two different chipset graphics cards? Are there any debugging flags that I 
might enable or try?

While using only my Windows vm and the FX 5800 the system runs fine. I've left 
the Quadro 4000 installed for the moment (the Quadro 5000 is resting on my desk 
for now). The PSU has enough power to support both GPUs so I'm looking for 
other potential issues.

- Brian Menges


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