Oh, sorry. You seem to be using unsupported graphics drivers from

Please remove those using ppa-purge, reboot, and if the problem persists
then reopen this bug.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Invalid

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Packages, which is subscribed to linux in Ubuntu.

  Screen pixelation with linux kernel > 4.17.19-041719

Status in linux package in Ubuntu:

Bug description:
  At random intervals the screen suddenly pixelates.

  The issue does not happen when using the linux kernel v4.17.19-041719
  but happens when using other kernels greater than v4.17.19-041719 upto
  and including 5.0.0-8.9

  Please let me know if you need any other logs and I can provide the

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: xorg 1:7.7+19ubuntu12
  ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1
  Uname: Linux 5.0.0-8-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  CompositorRunning: None
  Date: Fri Apr 12 21:25:09 2019
  DistUpgraded: 2019-02-16 12:12:04,532 DEBUG confirmRestart() called
  DistroCodename: disco
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] 
(rev 0b) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Haswell-ULT Integrated Graphics 
Controller [103c:198f]
  InstallationDate: Installed on 2018-11-07 (156 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 
  MachineType: Hewlett-Packard HP EliteBook 840 G1
   PATH=(custom, no user)
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-8-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
  SourcePackage: xorg
  UpgradeStatus: Upgraded to disco on 2019-02-16 (55 days ago)
  dmi.bios.date: 01/24/2014
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L71 Ver. 01.06
  dmi.board.name: 198F
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 15.52
  dmi.chassis.asset.tag: CNU4079SS2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
  dmi.product.name: HP EliteBook 840 G1
  dmi.product.sku: G3C37US#ABA
  dmi.product.version: A3009DD10303
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.97+git1904121830.210bfd~oibaf~d
  version.libgl1-mesa-dri: libgl1-mesa-dri 19.1~git1904121930.f4fc2e~oibaf~d
  version.libgl1-mesa-glx: libgl1-mesa-glx 19.1~git1904121930.f4fc2e~oibaf~d
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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