Public bug reported:

This happens intermittently on Xenial since upgrading to kernel 4.8:

After resuming from standby (S3), white borders with colored dots appear
around windows (see screenshot attached).

Restarting lightdm (sudo systemctl restart lightdm.service) on a text
console fixes the problem (but logs out the graphical desktop user).

NVIDIA GeForce GTX 950
NVIDIA binary driver - version 375.39
Ubuntu 4.8.0-41.44~16.04.1-generic 4.8.17

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nvidia-375 375.39-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.8.0-41.44~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr  4 12:32:10 2017
InstallationDate: Installed on 2014-12-24 (831 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: nvidia-graphics-drivers-375
UpgradeStatus: Upgraded to xenial on 2016-04-22 (346 days ago)

** Affects: nvidia-graphics-drivers-375 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

** Attachment added: "Screenshot-after-Resuming-from-Suspend-To-RAM.png"
   
https://bugs.launchpad.net/bugs/1679627/+attachment/4854195/+files/Screenshot-after-Resuming-from-Suspend-To-RAM.png

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https://bugs.launchpad.net/bugs/1679627

Title:
  White/colored noise borders around windows after resume from standby
  (Nvidia on Xenial with kernel 4.8)

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