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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1208297

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: precise

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https://bugs.launchpad.net/bugs/1208297

Title:
  IOMMU Broken on 3.8 kernels?

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I've got an Asrock A75Pro4-M, after enabling IOMMU from BIOS running with kernel 3.2.0-29-generic dmesg reported iommu correctly working:
  [    0.518415] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 extended features:  PreF PPR GT IA
  [    0.518479] AMD-Vi: Initialized for Passthrough Mode

  Now with kernel 3.8.0-27 :
  "AMD IOMMUv2 functionality not available on this system"

  No more lines referring to IOMMU v1, is that a common behaviour?

  Thanks

  P.S. "ubuntu-bug linux" states that my current image file does not
  comes from an offical package (not true)

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