Looking deeper at this bug I just noticed the issue is triggered by using a fake screen resolution:
1912x1080_60.00 (0x48) 171.250MHz -HSync +VSync *current +preferred It should be 1920x1080 (https://support.hp.com/au- en/document/c05033206#AbT3). While Xorg lets you create any resolution of your choice, doing so will result in indirect rendering, which will result in tearing with the modeset driver. So this bug seems like user error... You just need to remove the custom mode "1912x1080" or find out what/where that came from. ** Changed in: xorg-server (Ubuntu) Status: Triaged => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1888810 Title: MATE desktop in Ubuntu 20.04 screen tearing with modeset driver Status in X.Org X server: Unknown Status in xorg-server package in Ubuntu: Invalid Bug description: Running a Ubuntu 20.04 with its default (kmodesetting ?) driver. Screen tearing is present and shows artefacts while scrolling in browsers (firefox and chromium) and videos. Ubuntu 5.4.0-40.44-generic 5.4.44 Processor/GPU is a core m5-6y54 (Skylake) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: MATE DistUpgraded: Fresh install DistroCodename: focal DistroRelease: Ubuntu 20.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation HD Graphics 515 [8086:191e] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company HD Graphics 515 [103c:8170] InstallationDate: Installed on 2020-05-10 (78 days ago) InstallationMedia: Ubuntu-MATE 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 8087:0a2b Intel Corp. Bus 001 Device 002: ID 04f2:b560 Chicony Electronics Co., Ltd HP HD Camera Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: HP HP EliteBook Folio G1 Package: xorg-server (not installed) ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic root=UUID=92c467dc-e394-4f19-a6a2-e7cf918f0ffb ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Tags: focal ubuntu Uname: Linux 5.4.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/05/2020 dmi.bios.vendor: HP dmi.bios.version: N91 Ver. 01.45 dmi.board.name: 8170 dmi.board.vendor: HP dmi.board.version: KBC Version 29.73 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrN91Ver.01.45:bd01/05/2020:svnHP:pnHPEliteBookFolioG1:pvr:rvnHP:rn8170:rvrKBCVersion29.73:cvnHP:ct10:cvr: dmi.product.family: 103C_5336AN dmi.product.name: HP EliteBook Folio G1 dmi.product.sku: V1C39EA#ABD 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/xorg-server/+bug/1888810/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
