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[Bug 1455870] Re: Suspend to RAM freeze when wawking up with linux image 3.19.0-16


Here is the apport report. Apport-bug is broken in kubuntu 15.04 so I
manually attached this one got from apport-bug

** Attachment added: "1455870.apport"

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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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