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[Bug 1455870] Missing required logs.


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

apport-collect 1455870

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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  Suspend to RAM freeze when wawking up with linux image 3.19.0-16

Status in linux package in Ubuntu:

Bug description:
  Hi all,

  I noticed with my laptop samsung r525 running a fresh install of
  kubuntu 15.04 that if I close the screen, the computer goes to suspend
  to RAM but when I try to wake it up, the computer starts again but the
  screen does not turn on. Nothing is displayed and the screen remains
  turned off, including backlights (this is diferent from having
  backlights on again a blackscreen displayed on screen).

  I can reproduce the same behaviour by using the pm-suspend command
  from shell, or clicking "suspend to ram" into the exit menu.

  If I boot from the 3.19.0-15 kernel, everything works properly. I
  tried another kernel picked up from here http://kernel.ubuntu.com
  /~kernel-ppa/mainline/?C=N;O=D following this wiki page
  (respectfully the v4.1-rc3-unstable and v4.1-rc2-vivid and I got the
  same problem each time.

  What is going wrong ?

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