External screen Flickering in Ubuntu 24.04

[GuiYou65]

Since the 24.04 upgrade, my external monitor is blincking frequently. I did not discover the actual cause but it is linked with interactions in applications running on the internal screen of my laptop (HP Victus 16).
Seems I am not the only one ...
https://www.reddit.com/r/Ubuntu/comments/1cfzjpj/screen_flickering_in_ubuntu_2404/?rdt=47110

It is not comfortable for the eyesto have this behaviour. And it's very irritating!

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: xorg 1:7.7+23ubuntu3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
BootLog: Error: [Errno 13] Permission non accordée: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue May 21 19:08:57 2024
DistUpgraded: 2024-04-25 10:16:16,394 DEBUG migrateToDeb822Sources()
DistroCodename: noble
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Subsystem: Hewlett-Packard Company Navi 14 [Radeon RX 5500/5500M / Pro 5500M] [103c:8934]
 Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1638] (rev c6) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [103c:8934]
InstallationDate: Installed on 2023-02-14 (462 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
MachineType: HP Victus by HP Laptop 16-e0xxx
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-31-generic root=UUID=b8fb6267-1955-4400-907b-d82c7311ab5d ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to noble on 2024-04-25 (26 days ago)
dmi.bios.date: 10/17/2023
dmi.bios.release: 15.19
dmi.bios.vendor: AMI
dmi.bios.version: F.19
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 8934
dmi.board.vendor: HP
dmi.board.version: 80.73
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 80.73
dmi.modalias: dmi:bvnAMI:bvrF.19:bd10/17/2023:br15.19:efr80.73:svnHP:pnVictusbyHPLaptop16-e0xxx:pvr:rvnHP:rn8934:rvr80.73:cvnHP:ct10:cvrChassisVersion:sku4S1W4EA#ABF:
dmi.product.family: 103C_5335M7 HP VICTUS
dmi.product.name: Victus by HP Laptop 16-e0xxx
dmi.product.sku: 4S1W4EA#ABF
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.120-2build1
version.libgl1-mesa-dri: libgl1-mesa-dri 24.0.5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mario Marinero (mmarinero)]

It may be a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2065250, but hardware is different

[Daniel van Vugt (vanvugt)]

Next time the problem starts happening please run:

  journalctl -b0 > journal.txt

and attach the resulting text file here.