Public bug reported: I am observing screen that my Dell screen flickers once in a while for a short duration (about 5 secs or so) after upgrading to latest LTS. The problem is 100 % reproducible on my computer by holding the left mouse button pressed while dragging the scrollbar. Even otherwise this flickering is observed automatically about 3-4 times in a span of 20 mins.
Expected Behaviour: The screen does not flicker automatically or while scrolling a web page. Package version: xorg: Installed: 1:7.7+23ubuntu3 Candidate: 1:7.7+23ubuntu3 Version table: *** 1:7.7+23ubuntu3 500 500 http://in.archive.ubuntu.com/ubuntu noble/main amd64 Packages 100 /var/lib/dpkg/status LSB_Release Information: Description: Ubuntu 24.04.1 LTS Release: 24.04 ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: xorg 1:7.7+23ubuntu3 ProcVersionSignature: Ubuntu 6.8.0-45.45-generic 6.8.12 Uname: Linux 6.8.0-45-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: unknown CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Sep 27 15:46:00 2024 DistUpgraded: 2024-09-27 13:45:39,634 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py' DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-bionic-amd64-20180608-47+bolt-l+X51 DistroCodename: noble DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation WhiskeyLake-U GT2 [UHD Graphics 620] [8086:3ea0] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Dell WhiskeyLake-U GT2 [UHD Graphics 620] [1028:08bc] InstallationDate: Installed on 2019-10-17 (1807 days ago) InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20180608-09:38 Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 413c:301b Dell Computer Corp. Universal Bluetooth Receiver Bus 001 Device 003: ID 0bda:5520 Realtek Semiconductor Corp. Integrated_Webcam_HD Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP) Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub MachineType: Dell Inc. Latitude 3400 ProcEnviron: LANG=en_IN PATH=(custom, no user) SHELL=/bin/bash XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-45-generic root=UUID=2fb9395f-2fe4-4c97-ac45-70c28b10ef1d ro mem_sleep_default=deep quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to noble on 2024-09-27 (0 days ago) dmi.bios.date: 08/06/2024 dmi.bios.release: 1.33 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.33.0 dmi.board.name: 0GTC5X dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.33.0:bd08/06/2024:br1.33:svnDellInc.:pnLatitude3400:pvr:rvnDellInc.:rn0GTC5X:rvrA00:cvnDellInc.:ct10:cvr:sku08BC: dmi.product.family: Latitude dmi.product.name: Latitude 3400 dmi.product.sku: 08BC dmi.sys.vendor: Dell Inc. modified.conffile..etc.init.d.apport: [modified] mtime.conffile..etc.init.d.apport: 2024-07-22T20:29:07 version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.120-2build1 version.libgl1-mesa-dri: libgl1-mesa-dri 24.0.9-0ubuntu0.1 version.libgl1-mesa-glx: libgl1-mesa-glx 23.0.4-0ubuntu1~22.04.1 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 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug noble ubuntu wayland-session -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/2083018 Title: Intermittent screen flickering observed after upgrading to 24.04 LTS from 22.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/2083018/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp