Public bug reported: 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 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ubuntu -- You received this bug notification because you are a member of Desktop 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 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/+bug/1890135/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp