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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 1555786

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

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https://bugs.launchpad.net/bugs/1555786

Title:
  [Hyper-V] VM with ubuntu 32bit with linux-next does not boot

Status in linux package in Ubuntu:
  Triaged

Bug description:
  We identified that at least ubuntu (let's take 15.10) does not boot if
  installed in the 32bit architecture, and using the linux-next upstream
  kernel 4.5 on it. This has been seen on other distributions as well.

  We took both the official linux-next branch from kernel.org and the one from kernel.ubuntu.com v4.5-rc7.
  For the compilation process we went either with the 4.2 kernel config file from the installed running kernel, and also built the config separately. 
  No errors have been encountered during the build or install process of the 4.5 kernel, however at boot, the VM will just hang.
  There are no call traces or messages at boot to show any pottential issue.

  Have you seen this on your end when testing the 32bit build?
  Attaching the full serial log for reference, however I don't see any errors in the kernel boot process.

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