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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888810 Title: MATE desktop in Ubuntu 20.04 screen tearing with modeset driver To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1888810/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
