Sorry, but this looks to me like a broken (or just poorly connected) LCD
panel in the laptop. Not a software problem.
I've had similar problems myself before, and the fix each time was to
either replace the LCD panel, or to just reconnect its wires (sometimes
the problem is just a bad connection).
As a first point of call you should return the laptop to where you
bought it, or contact HP Support about a warranty claim.
** Summary changed:
- Screen flickers randomly appears on built-in laptop display only
+ Vertical line screen flickers randomly appears on built-in laptop display only
** Package changed: xorg (Ubuntu) => ubuntu
** Changed in: ubuntu
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1824415
Title:
Vertical line screen flickers randomly appears on built-in laptop
display only
Status in Ubuntu:
Invalid
Bug description:
The issue is similar to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1785912
the short video with the problem
https://photos.app.goo.gl/i5dHrQUDV1T2gp8o9
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-47.50-generic 4.15.18
Uname: Linux 4.15.0-47-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 11 22:42:06 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Hewlett-Packard Company UHD Graphics 620 [103c:83b2]
InstallationDate: Installed on 2018-12-03 (129 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: HP HP EliteBook 840 G5
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic
root=UUID=4b3ca7ee-f7ef-4f10-ae37-d86fdeb64942 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/12/2018
dmi.bios.vendor: HP
dmi.bios.version: Q78 Ver. 01.04.00
dmi.board.name: 83B2
dmi.board.vendor: HP
dmi.board.version: KBC Version 04.53.00
dmi.chassis.asset.tag: F51020
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrQ78Ver.01.04.00:bd09/12/2018:svnHP:pnHPEliteBook840G5:pvr:rvnHP:rn83B2:rvrKBCVersion04.53.00:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN HP EliteBook
dmi.product.name: HP EliteBook 840 G5
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
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