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Re: [Xen-users] Help with VGA passthrough


  • To: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
  • From: Brian Menges <bmenges@xxxxxxxxxx>
  • Date: Mon, 30 Jun 2014 17:47:35 +0000
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  • Thread-topic: [Xen-users] Help with VGA passthrough

à What i5 do you have and you are using  iommu=soft swiotlb=force vt.handoff=7 does your system supports vt-d ?

 

So on a linux DomU I had iommu=soft and swiotlb=force, but what are the other one/two commands, your typos are hard for me to read there.

 

So far as the proc I have,

i5-2400 CPU @ 3.10GHz

flags           : fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc aperfmperf pni pclmulqdq vmx est ssse3 sse4_1 sse4_2 x2apic popcnt aes hypervisor ida arat tpr_shadow vnmi flexpriority ept vpid

 

http://ark.intel.com/products/52207/Intel-Core-i5-2400-Processor-6M-Cache-up-to-3_40-GHz

 

According to Intel, I have both VT-d and VT-x (w/EPT). This proc should be sufficient. Iâve installed XenServer and it didnât bark (and it will) about insufficient VT flags.

 

 

- Brian Menges

Principal Engineer, DevOps

GoGrid | ServePath | ColoServe | UpStream Networks

 

From: jacek burghardt [mailto:jaceksburghardt@xxxxxxxxx]
Sent: Monday, June 30, 2014 10:38
To: Brian Menges
Cc: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] Help with VGA passthrough

 

What i5 do you have and you are using  iommu=soft swiotlb=force vt.handoff=7 does your system supports vt-d ?

 

On Mon, Jun 30, 2014 at 10:48 AM, Brian Menges <bmenges@xxxxxxxxxx> wrote:

I tried disabling and also uninstalling the Standard VGA Adapter. It doesn't appear to be using the display headers on the HD6450 at all. Since these settings cannot be changed via remote desktop, I installed RealVNC... which seems to bork networking for dom0 even and forces a reboot for me... wonderful.

Anyone else having an issue with their gpu passthrough not using the card's display headers at all? This is a HVM Windows 7 x64 box.


- Brian Menges
Principal Engineer, DevOps
GoGrid | ServePath | ColoServe | UpStream Networks

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxx] On Behalf Of Gordan Bobic

Sent: Friday, June 27, 2014 23:20
To: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] Help with VGA passthrough

On 06/27/2014 05:23 PM, Brian Menges wrote:
> So I assigned the Radeon HD 6450 to my Windows VM; and according to
> the device manager across RDP, it is working properly, but monitor
> hooked up isn't showing any display.
>
> Am I missing something? I thought that gpu passthrough would result in
> a usable display so that I could then connect to this server via
> synergy and use a dedicated graphics engine.

Did you adjust your display settings to switch the default desktop screen to the one on the Radeon?


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The information contained in this message, and any attachments, may contain confidential and legally privileged material. It is solely for the use of the person or entity to which it is addressed. Any review, retransmission, dissemination, or action taken in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer.
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