Public bug reported: This is an issue which has troubled me for a while. Anecdotally, scrolling feels way too fast in GNOME on Wayland compared to on X11. I finally tested it semi-scientifically, and it seems like GNOME on Wayland scrolls almost exactly 1.5x faster than GNOME on X11.
I tested this by testing how many lines are scrolled from a full two- finger touchpad swipe from the bottom of my touchpad to the top of my touchpad, and logged a few attempts in both X and Wayland. I kept track of the results in this spreadsheet: https://docs.google.com/spreadsheets/d/17EaBM5Pgt7GdnnzcN2Vchk4kfT7IZ6i4qZ0zpVRGLhc/edit?usp=sharing I scrolled in one of my own GTK applications (https://github.com/mortie/lograt) because it lets me easily see how many lines I scrolled. Attach is a video of one full scroll on X11 and one full scroll on Wayland. This testing was performed on a Dell XPS 13 9343, but I've also used Ubuntu on a Dell XPS 9575 where GNOME Wayland scrolling also feels way too fast. I don't have other hardware to test on. This has been an issue on both Ubuntu 20.10 and Ubuntu 21.04. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: gnome-shell 3.38.4-1ubuntu1 ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7 Uname: Linux 5.11.0-13-generic x86_64 ApportVersion: 2.20.11-0ubuntu61 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Wed Mar 31 11:44:04 2021 DisplayManager: gdm3 InstallationDate: Installed on 2019-11-21 (495 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) RelatedPackageVersions: mutter-common 3.38.4-1ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to hirsute on 2021-03-16 (14 days ago) ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Affects: mutter (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug hirsute wayland-session ** Attachment added: "scrolling.mp4" https://bugs.launchpad.net/bugs/1922047/+attachment/5482697/+files/scrolling.mp4 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1922047 Title: Touchpad scrolling is 1.5x faster on Wayland than on X11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1922047/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
