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[Bug 1525615] Missing required logs.


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

apport-collect 1525615

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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  Ubuntu not booting on iMac 5K with ACPI enabled

Status in linux package in Ubuntu:

Bug description:
  With a 27in 5k ( new as of two weeks ago) I'm unable to boot the
  kernel without  parameter "acpi=off:", it also needs "nomodeset" into
  order to get a working system.

  The applies to both the live installer and a system installed on disk.
  With out the parameters I just get a blank screen. It gives a blank
  screen event if the "quiet" is removed from the kernel parameters.

  The system has a 250G SSD.

  I'm using the Kubutu live installer for Wily off a USB stick.

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