Lonnie Lee Best, thank you for reporting this and helping make Ubuntu
better.

1) Is this something that started to happen after an update? If so,
which and when precisely?

2) To clarify, could you please describe how your computer is connected
to monitor (e.g. using a HDMI cord connecting both, using a
dongle/adapter, etc.)?

3) Regarding the use of kernel boot parameter acpi_backlight=vendor is
this required? If you remove it, is this issue still reproducible?

4) If you remove the nvidia drivers and use nouveau, is this
reproducible?

5) As per nvidia.com the latest driver version available for your card
is 390.59. hence, to see if this is already resolved in Ubuntu, could
you please test http://cdimage.ubuntu.com/daily-live/current/ and advise
to the results?

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

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

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1771062

Title:
  LG 27UK650 Monitor Won't Come Back On After Inactivity Turn Off

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  After Ubuntu 16.04.4 turns off my monitor (due to inactivity timeout),
  I cannot get it to come back on without rebooting.

  Monitor: LG 27UK650
  Specs:   
http://www.lg.com/us/support/products/documents/27UK650-W%20Spec%20Sheet.pdf

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-41.46~16.04.1-generic 4.13.16
  Uname: Linux 4.13.0-41-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  384.111  Tue Dec 19 23:51:45 
PST 2017
   GCC version:  gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)
  .tmp.unity_support_test.0:

  ApportVersion: 2.20.1-0ubuntu2.17
  Architecture: amd64
  BootLog:

  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: Mon May 14 01:15:22 2018
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  DkmsStatus:
   bbswitch, 0.8, 4.13.0-41-generic, x86_64: installed
   nvidia-384, 384.111, 4.13.0-41-generic, x86_64: installed
   virtualbox, 5.1.34, 4.13.0-41-generic, x86_64: installed
   virtualbox, 5.1.34, 4.4.0-124-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   NVIDIA Corporation Device [10de:1be1] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: CLEVO/KAPOK Computer Device [1558:087a]
  InstallationDate: Installed on 2018-05-12 (2 days ago)
  InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 
(20180228)
  MachineType: System76 Bonobo WS
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-41-generic.efi.signed 
root=UUID=905343e7-683c-43f3-9ee8-b5e8909f865b ro acpi_backlight=vendor quiet 
splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/12/2017
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.05.04RSA5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Bonobo WS
  dmi.board.vendor: System76
  dmi.board.version: bonw13
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: System76
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.05.04RSA5:bd12/12/2017:svnSystem76:pnBonoboWS:pvrbonw13:rvnSystem76:rnBonoboWS:rvrbonw13:cvnSystem76:ct10:cvrN/A:
  dmi.product.family: Not Applicable
  dmi.product.name: Bonobo WS
  dmi.product.version: bonw13
  dmi.sys.vendor: System76
  version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.83-1~16.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~16.04.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~16.04.1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Mon May 14 01:02:31 2018
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:

  xserver.version: 2:1.19.5-0ubuntu2~16.04.1

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