AMT KVM w boot option iommu=on

AMT KVM w boot option iommu=on

Hi, All

I use Ubuntu 13.10 (kernel 3.11.0 amd64) server running on dq67sw.

When I connect via VNC AMT,  appears  flashing icon in the upper right corner of the server screen.
When server loaded with the boot option iommu=on
each accompanied by a flashing icon output to console:
.....
Nov 28 07:40:41 dq67srv kernel: [ 9238.777273] dmar: DRHD: handling fault status reg 2
Nov 28 07:40:41 dq67srv kernel: [ 9238.777316] dmar: DMAR:[DMA Read] Request device [00:02.0] fault addr 2b7024d000 
Nov 28 07:40:41 dq67srv kernel: [ 9238.777316] DMAR:[fault reason 07] Next page table ptr is invalid
Nov 28 07:40:41 dq67srv kernel: [ 9238.777901] dmar: DRHD: handling fault status reg 3
Nov 28 07:40:41 dq67srv kernel: [ 9238.777942] dmar: DMAR:[DMA Read] Request device [00:02.0] fault addr 2b7024d000 
Nov 28 07:40:41 dq67srv kernel: [ 9238.777942] DMAR:[fault reason 07] Next page table ptr is invalid
Nov 28 07:40:41 dq67srv kernel: [ 9238.778029] dmar: DRHD: handling fault status reg 2
Nov 28 07:40:41 dq67srv kernel: [ 9238.778063] dmar: DMAR:[DMA Read] Request device [00:02.0] fault addr 2b7024d000 
Nov 28 07:40:41 dq67srv kernel: [ 9238.778063] DMAR:[fault reason 07] Next page table ptr is invalid
Nov 28 07:40:41 dq67srv kernel: [ 9238.778341] dmar: DRHD: handling fault status reg 3
......

user@dq67srv:~$ lspci |grep 00:02.0

	00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

Which makes it impossible to work through VNC.

  1. How to suppress the flashing iconn
  2. Why is this problem:
  •   - Linux kernel
  •   - Igfx driver
  •   - ME firmware?

Thx, 
Maxim

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Sounds like a Sandy Bridge system - AMT 7 - correct?  What is the configuration of your AMT Client?  FW version, AMT SDK verson and which tools are you using to connect to the KVM?  

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My system:

Baseboard

 

 
 

Manufacturer

Intel Corporation

 
 

Product name

DQ67SW

 
 

Version

AAG12527-305

 
 

Serial number

BQSW110001WR

 
 

 
 

 
 

BIOS

 

 
 

Vendor

Intel Corp.

 
 

Version

SWQ6710H.86A.0066.2012.1105.1504

 
 

Release date

11/05/2012

 

 Processor 1

 

 
 

Manufacturer

Intel(R) Corp.

 
 

Family

Intel® Core™ i7 Processor

 
 

Socket

SKTH

 
 

Version

Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz

 
 

ID

13829424153406604967

 

VNC client: RealVNC VNC Viewer Plus 1.2.6(r113854) 

 

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