Thanks for the bug report. I can see two possible problems here that
might relate to screen flicker:

* The i915 kernel driver crashed, in intel_modeset_init

* Xorg is using probably the wrong driver 'intel'. It should be using
the modesetting driver on a modern system like yours. Please try
removing that wrong driver:

  sudo apt remove xserver-xorg-video-intel

or just try logging into "Ubuntu on Wayland" instead.

Maybe it's some combination of the above two issues.

** Package changed: xorg (Ubuntu) => linux (Ubuntu)

** Also affects: xserver-xorg-video-intel (Ubuntu)
   Importance: Undecided
       Status: New

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

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: New => Incomplete

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  ubuntu 18 screen flicker/blink

Status in linux package in Ubuntu:
Status in xserver-xorg-video-intel package in Ubuntu:

Bug description:
  Ubuntu screen flicker /blinking on start laptop every time

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7.1
  ProcVersionSignature: Ubuntu 4.15.0-76.86-generic 4.15.18
  Uname: Linux 4.15.0-76-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  CompositorRunning: None
  Date: Sat Feb  8 20:50:43 2020
  DistUpgraded: 2019-06-27 23:49:46,134 DEBUG icon theme changed, re-reading
  DistroCodename: bionic
  DistroVariant: ubuntu
  DkmsStatus: bcmwl,, 4.15.0-76-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, including running git bisection searches
   Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA 
     Subsystem: Hewlett-Packard Company HD Graphics 5500 [103c:80c1]
  InstallationDate: Installed on 2015-10-17 (1574 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: Hewlett-Packard HP Notebook
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-76-generic 
root=UUID=733f49c2-0b52-4a07-9eea-15cbf15593cf ro quiet splash
  SourcePackage: xorg
  UpgradeStatus: Upgraded to bionic on 2019-06-27 (225 days ago) 06/04/2015
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.0B
  dmi.board.asset.tag: Type2 - Board Asset Tag 80C1
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 96.11
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
dmi:bvnInsyde:bvrF.0B:bd06/04/2015:svnHewlett-Packard:pnHPNotebook:pvrType1ProductConfigId:rvnHewlett-Packard:rn80C1:rvr96.11:cvnHewlett-Packard:ct10:cvrChassisVersion: 103C_5335KV G=N L=CON B=HP HP Notebook
  dmi.product.version: Type1ProductConfigId
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:
  version.libdrm2: libdrm2 2.4.99-1ubuntu1~18.04.2
  version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.2
  version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.8-0ubuntu0~18.04.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
  xserver.bootTime: Thu Jun 27 18:02:31 2019
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
   product id                               20049 
   vendor                                     SDC
  xserver.version: 2:1.18.4-0ubuntu0.8

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