*** This bug is a duplicate of bug 1754284 *** https://bugs.launchpad.net/bugs/1754284
This sounds like bug 1754284 so I will mark it as a duplicate until proven otherwise. The workaround for that would be to select 'Ubuntu on Wayland' on the login screen. If you disagree with this then please run the following command to collect more information: journalctl -b0 > journal.txt and attach the resulting text file here. ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** This bug has been marked a duplicate of bug 1754284 Fullscreen windows are tearing in Xorg sessions -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1890135 Title: LInes/Flickers occur in upper half of the screen. Status in xorg-server package in Ubuntu: New Bug description: Lines or flickers occur in upper half of the screen while playing videos(1080p).I think some frames are being dropped. Had the same problem with Ubuntu 18.04. I think this is some issue with Intel HD Graphics drivers in the system.Ready to do any follow up procedures. Earlier when I used Ubuntu 16.04 there was no such problem. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 CasperMD5CheckResult: skip CompositorRunning: None Date: Mon Aug 3 16:24:16 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Skylake GT2 [HD Graphics 520] [103c:81ec] Subsystem: Hewlett-Packard Company Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile] [103c:81ec] InstallationDate: Installed on 2020-07-31 (3 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f2:b56c Chicony Electronics Co., Ltd HP TrueVision HD Bus 001 Device 002: ID 0bda:b008 Realtek Semiconductor Corp. Bluetooth Radio Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: HP HP Notebook ProcEnviron: LANGUAGE=en_IN:en TERM=xterm-256color PATH=(custom, no user) LANG=en_IN SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=d981cf87-c80a-4e9c-b4a1-e2c2073a35ed ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/01/2016 dmi.bios.vendor: Insyde dmi.bios.version: F.14 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 81EC dmi.board.vendor: HP dmi.board.version: 61.30 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.14:bd08/01/2016:svnHP:pnHPNotebook:pvrType1ProductConfigId:rvnHP:rn81EC:rvr61.30:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV G=N L=CON B=HP dmi.product.name: HP Notebook dmi.product.sku: Z1D92PA#ACJ dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1890135/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp