Thanks. I've reassigned this to the kernel because that video shows the
problem happening before mutter/gnome-shell is even running.
** Summary changed:
- [HP 120-1100eo API] Screen flickering white vertical lines
+ [HP 120-1100eo API] Screen flickering white horizontal lines
** Package changed: mutter (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: Incomplete => New
** Summary changed:
- [HP 120-1100eo API] Screen flickering white horizontal lines
+ [HP 120-1100eo AIO] Screen flickering white horizontal lines
** Package changed: linux (Ubuntu) => linux-hwe-5.11 (Ubuntu)
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https://bugs.launchpad.net/bugs/1939173
Title:
[HP 120-1100eo AIO] Screen flickering white horizontal lines
Status in linux-hwe-5.11 package in Ubuntu:
New
Bug description:
The screen on my HP AIO computer flickers. I'm able to browse the
computer, but it's giving me headache.
Flickering consists pattern of 2cm height white vertical pixel lines
(1*Wpx white and 1*Wpx transparent lines) and 2cm transparent section.
Flicker also has 1px lines with dashes ending them about 10cm from
left of the screen and 2cm from right of the screen.
Mathematically letter W being 100% of screen width in above
description.
Flickering seems to be consistent to screen refresh state (~60Hz).
Changing refresh rate does not affect in to amount of flickering.
Same thing not happening in Windows nor BIOS. Even though this looks a
LOT like a hardware/wiring issue.
Also the problem is visible in Ubuntu installer, but not in graphic
safe one.
Best regards, korho.
$ lsb_release -rd:
Description: Ubuntu 20.04.2 LTS
Release: 20.04
$ apt-cache policy xorg
xorg:
Installed: 1:7.7+19ubuntu14
Candidate: 1:7.7+19ubuntu14
Version table:
*** 1:7.7+19ubuntu14 500
500 http://fi.archive.ubuntu.com/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 6 23:04:27 2021
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company 2nd Generation Core Processor Family
Integrated Graphics Controller [103c:2ac5]
InstallationDate: Installed on 2021-08-06 (0 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
MachineType: Hewlett-Packard 120-1100eo
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-25-generic
root=UUID=bf3dba7e-429f-455e-ac68-c016e272a4d9 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/17/2011
dmi.bios.release: 4.6
dmi.bios.vendor: AMI
dmi.bios.version: LEO_707
dmi.board.name: 2AC5
dmi.board.vendor: Quanta
dmi.board.version: 100
dmi.chassis.asset.tag: CZC2128RP3
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnAMI:bvrLEO_707:bd11/17/2011:br4.6:svnHewlett-Packard:pn120-1100eo:pvr:rvnQuanta:rn2AC5:rvr100:cvnHewlett-Packard:ct3:cvr:
dmi.product.family: 103C_53316J G=D
dmi.product.name: 120-1100eo
dmi.product.sku: H1E79EA#UUW
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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