Public bug reported:

I am currently testing Xubuntu 16.04 beta. Hibernation does not work
properly.

I ran sudo pm-hibernate, then rebooted.
The hibernation part itself seems to work nice.

Resuming presents the following behaviour :
 - the booting sequence starts
 - the console shows the progress of the resuming process (10%, 20%, etc.)
 - my monitor switches to graphical mode like I would expect, but it then 
remains black instead of showing my desktop. It does not go to "sleep mode" 
like it does when the computer is off or the DVI cable is disconnected.

The computer remains responsive, and if music was playing when
hibernation started, it properly resumes. I can also use the keyboard
(to run sudo reboot now, for example). Switching to another virtual
console (Ctrl+Alt+1, Ctrl+Alt+7) does not improve the situation.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pm-utils 1.4.1-16
ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
Uname: Linux 4.4.0-10-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Tue Mar  8 14:03:50 2016
InstallationDate: Installed on 2016-03-06 (2 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr_FR
 TERM=xterm
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: pm-utils
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: pm-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to pm-utils in Ubuntu.
https://bugs.launchpad.net/bugs/1554509

Title:
  Screen remains black after resume from hibernation

Status in pm-utils package in Ubuntu:
  New

Bug description:
  I am currently testing Xubuntu 16.04 beta. Hibernation does not work
  properly.

  I ran sudo pm-hibernate, then rebooted.
  The hibernation part itself seems to work nice.

  Resuming presents the following behaviour :
   - the booting sequence starts
   - the console shows the progress of the resuming process (10%, 20%, etc.)
   - my monitor switches to graphical mode like I would expect, but it then 
remains black instead of showing my desktop. It does not go to "sleep mode" 
like it does when the computer is off or the DVI cable is disconnected.

  The computer remains responsive, and if music was playing when
  hibernation started, it properly resumes. I can also use the keyboard
  (to run sudo reboot now, for example). Switching to another virtual
  console (Ctrl+Alt+1, Ctrl+Alt+7) does not improve the situation.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: pm-utils 1.4.1-16
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Tue Mar  8 14:03:50 2016
  InstallationDate: Installed on 2016-03-06 (2 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=fr_FR
   TERM=xterm
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: pm-utils
  UpgradeStatus: No upgrade log present (probably fresh install)

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