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[Edgar <1574125@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1566302 ***
    https://bugs.launchpad.net/bugs/1566302

The kernel 4.5.2 solved the problem in my laptop, a Dell Inspiron 7520.
The kernel 4.4.0 seems to be the reason of the problem.

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https://bugs.launchpad.net/bugs/1574125

Title:
  suspend not working after upgrade

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  Upgraded from Ubuntu 15.10 where suspend workes flawlessly. After
  upgrade, putting machine in suspend turns the monitor black and
  everything seem to be off, though the fan still spins, the power light
  is on and the battery is trained. Nothing seem to wake it up (Meaning
  different key combinations - trying to get a shell by Ctrl+Alt+F1, for
  example; pressing power, any other key).

  Unsure how to try to get it working since I have to kill the power by
  pressing down the power button, then restarting it (it then does a
  drive scan for errors).

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  maria      2076 F.... pulseaudio
   /dev/snd/controlC1:  maria      2076 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Apr 24 00:07:49 2016
  HibernationDevice: RESUME=UUID=cc1bb3f2-abd6-41ad-b36e-62190fc5faaa
  InstallationDate: Installed on 2016-01-31 (83 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20351
  ProcEnviron:
   LANGUAGE=sv
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=sv_SE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-04-21 (2 days ago)
  dmi.bios.date: 04/02/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 9ACN25WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lancer 5A2
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G50-70
  dmi.modalias: dmi:bvnLENOVO:bvr9ACN25WW:bd04/02/2014:svnLENOVO:pn20351:pvrLenovoG50-70:rvnLENOVO:rnLancer5A2:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoG50-70:
  dmi.product.name: 20351
  dmi.product.version: Lenovo G50-70
  dmi.sys.vendor: LENOVO

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