Triaged. This tearing with multiple monitors is a known consequence of the Xorg modesetting driver.
The upstream bug is https://gitlab.freedesktop.org/xorg/xserver/issues/244 (shared with bug 1846398, which needs a similar fix). ** Summary changed: - Screen tearing in xorg gnome session on Latitude 7480 with WD19TB Thunderbolt dock + [modeset] Screen tearing when using multiple monitors ** Changed in: xorg-server (Ubuntu) Status: Incomplete => New ** Tags removed: xrandr-scaling ** Tags added: multimonitor ** Bug watch added: gitlab.freedesktop.org/xorg/xserver/issues #244 https://gitlab.freedesktop.org/xorg/xserver/issues/244 ** Also affects: xorg-server via https://gitlab.freedesktop.org/xorg/xserver/issues/244 Importance: Unknown Status: Unknown ** Changed in: xorg-server (Ubuntu) Importance: Undecided => Medium ** Changed in: xorg-server (Ubuntu) Status: New => Triaged ** Tags added: tearing -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1853094 Title: [modeset] Screen tearing when using multiple monitors To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1853094/+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