Thanks for the bug report. I would usually recommend trying MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 to fix this but your logs seem to suggest that mode is already active.
Please: 1. Try disabling these extensions in case they're having some effect: '[email protected]', '[email protected]', '[email protected]', '[email protected]' 2. Try a USB mouse and confirm there is no such lag. 3. Report your findings to libinput at: https://gitlab.freedesktop.org/libinput/libinput/-/issues ** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu) ** Summary changed: - 200% scaling on wayland touchpad feels laggy + 200% scaling on wayland touchpad feels laggy on X1 Carbon 9th ** Also affects: libinput (Ubuntu) Importance: Undecided Status: New ** Changed in: libinput (Ubuntu) Status: New => Incomplete ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2022369 Title: 200% scaling on wayland touchpad feels laggy on X1 Carbon 9th Status in libinput package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Bug description: I have an X1 carbon 9th gen with a 4k screen where I use 200% scaling. Unfortunately, the touchpad feels laggy and imprecise when trying to hit click targets. Switching to X11 helps as well as the flat acceleration profile in gnome tweaks. I feel like this is related to how gnome or libinput upscale mouse movement. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: gnome-shell 42.5-0ubuntu1 ProcVersionSignature: Ubuntu 5.19.0-42.43~22.04.1-generic 5.19.17 Uname: Linux 5.19.0-42-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jun 2 16:57:16 2023 DisplayManager: gdm3 InstallationDate: Installed on 2023-05-15 (18 days ago) InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223) RelatedPackageVersions: mutter-common 42.5-0ubuntu1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/2022369/+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
