Public bug reported:

After update of video drivers to HWE stack as per
https://wiki.ubuntu.com/Kernel/LTSEnablementStack (sudo apt-get install
--install-recommends xserver-xorg-hwe-16.04) I experience reproducible
screen corruption after unblanking screen. What happens

- screen goes blank
- I move mouse, screen unblanks
- random parts of screen begin to blink rapidly. Forcing redraw of window 
content (e.g. by clicking on application window to raise it) stops blinking.

I never observed this issue when using GA versions of Xorg stack. Using
HWE kernel as well.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-intel-hwe-16.04 
2:2.99.917+git20160706-1ubuntu1~16.04.1
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Feb 18 08:39:21 2017
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
InstallationDate: Installed on 2015-07-02 (596 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 
20140620-04:25
SourcePackage: xserver-xorg-video-intel-hwe-16.04
UpgradeStatus: Upgraded to xenial on 2016-10-29 (111 days ago)

** Affects: xserver-xorg-video-intel-hwe-16.04 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1665850

Title:
  Screen corruption after unblank with HWE stack

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