[Wayland-bugs] [Bug 91135] Two-finger scrolling jumpy with Synaptics touchpad

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91135

            Bug ID: 91135
           Summary: Two-finger scrolling jumpy with Synaptics touchpad
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: nalimilan at club.fr

Created attachment 116765
  --> https://bugs.freedesktop.org/attachment.cgi?id=116765&action=edit
evemu recording

I have an hp Pavilion dm4 with this touchpad:
# Input device name: "SynPS/2 Synaptics TouchPad"
# Input device ID: bus 0x11 vendor 0x02 product 0x07 version 0x1b1

Two-finger scrolling isn't smooth, which drives me back from libinput to the
synaptics X11 driver to use edge scrolling (two-finger scrolling isn't smooth
there either).

Attached is an evemu recording in which I move my two fingers up and down three
times at a "normal" pace to scroll on a web page. This is with libinput 0.11.0
on Fedora 22.

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