This is very subjective and I could be wrong. Upon disabling the extensions the lag was still present. With a USB mouse the lag is not present or at least not as noticable.
Interestingly if I switch to 1080p the issue dissapears. I think that subjectively the default mouse acceleration for 4k with 200% scaling should behave the same as 1080p with 100% scaling which is not the case (though this might be debatable / there might be good reasons why this is not the case). Will report this upstream. -- 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
