You have been subscribed to a public bug:
After updating my Ubuntu 16.04 kernel from 4.13.0-41 to 4.13.0-43, I am
seeing horizontal lines on the display. Rebooting into -41 makes them
disappear. This is most likely the same problem as seen in 18.04 by
another user:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1771204 (also see
the attached photo there)
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.13.0-43-generic 4.13.0-43.48~16.04.1
ProcVersionSignature: Ubuntu 4.13.0-43.48~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-43-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.1-0ubuntu2.17
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 26 22:56:48 2018
InstallationDate: Installed on 2014-05-19 (1468 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux (Ubuntu)
Importance: Low
Status: Incomplete
** Tags: amd64 apport-bug third-party-packages xenial
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Horizontal lines on Samsung Laptop np900x3g after update to 4.13.0-43
https://bugs.launchpad.net/bugs/1773581
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