** Description changed:

- After locking screen and as a result the monitor going into sleep mode, I 
can't get the login screen anymore, the monitor stays in sleep mode forever.
- In previous Ubuntu versions after pressing any key or the mouse, the login 
screen showed up, but not anymore. I have to restart the computer.
+ After locking screen and as a result the monitor going into sleep mode,
+ I can't get the login screen anymore, the monitor stays in sleep mode
+ forever.
  
- lsb_release -rd:
- Description:  Ubuntu 16.04.1 LTS
- Release:      16.04
+ In previous Ubuntu versions after pressing any key or the mouse, the
+ login screen showed up, but not anymore. I have to restart the computer.
+ 
+ WORKAROUND: Swtiched from Unity to Ubuntu GNOME.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
  Uname: Linux 4.4.0-34-generic x86_64
  .tmp.unity_support_test.0:
-  
+ 
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Aug 26 23:19:23 2016
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
-  Advanced Micro Devices, Inc. [AMD/ATI] RV410 [Radeon X700] [1002:5e4f] 
(prog-if 00 [VGA controller])
-    Subsystem: Gigabyte Technology Co., Ltd RV410 [Radeon X700] [1458:2120]
-    Subsystem: Gigabyte Technology Co., Ltd Device [1458:2121]
+  Advanced Micro Devices, Inc. [AMD/ATI] RV410 [Radeon X700] [1002:5e4f] 
(prog-if 00 [VGA controller])
+    Subsystem: Gigabyte Technology Co., Ltd RV410 [Radeon X700] [1458:2120]
+    Subsystem: Gigabyte Technology Co., Ltd Device [1458:2121]
  InstallationDate: Installed on 2016-07-12 (45 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  Lsusb:
-  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
-  Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
-  Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
-  Bus 002 Device 002: ID 045e:0734 Microsoft Corp. Wireless Optical Desktop 700
-  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+  Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+  Bus 002 Device 002: ID 045e:0734 Microsoft Corp. Wireless Optical Desktop 700
+  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: FUJITSU SIEMENS P5SD1-FM2
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic 
root=UUID=b2c81b2b-163d-41b4-869a-67882349ae49 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/03/2006
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0304
  dmi.board.name: P5SD1-FM2
  dmi.board.vendor: FUJITSU SIEMENS
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0304:bd01/03/2006:svnFUJITSUSIEMENS:pnP5SD1-FM2:pvrSystemVersion:rvnFUJITSUSIEMENS:rnP5SD1-FM2:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: P5SD1-FM2
  dmi.product.version: System Version
  dmi.sys.vendor: FUJITSU SIEMENS
  version.compiz: compiz 1:0.9.12.2+16.04.20160801.3-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.12-1build2
  xserver.bootTime: Fri Aug 26 23:12:08 2016
  xserver.configfile: default
  xserver.devices:
-  input        Power Button         KEYBOARD, id 6
-  input        Power Button         KEYBOARD, id 7
-  input        Liteon Microsoft® Wireless Receiver 700 v2.0 KEYBOARD, id 8
-  input        Liteon Microsoft® Wireless Receiver 700 v2.0 KEYBOARD, id 9
+  input        Power Button         KEYBOARD, id 6
+  input        Power Button         KEYBOARD, id 7
+  input        Liteon Microsoft® Wireless Receiver 700 v2.0 KEYBOARD, id 8
+  input        Liteon Microsoft® Wireless Receiver 700 v2.0 KEYBOARD, id 9
  xserver.errors:
-  
+ 
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.18.3-1ubuntu2.3
  xserver.video_driver: radeon

** Package changed: xorg (Ubuntu) => unity (Ubuntu)

** Changed in: unity (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1617471

Title:
  Can't login after lock screen (black screen)

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