[Wayland-bugs] [Bug 104828] Jumpy AlpsPS/2 ALPS DualPoint TouchPad

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104828

            Bug ID: 104828
           Summary: Jumpy AlpsPS/2 ALPS DualPoint TouchPad
           Product: Wayland
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: grouik.grouik at yahoo.fr

Hi,

Running Ubuntu 18.04 (dev) and libinput 1.9.4-2ubuntu1 on a Dell Precision
7510.

Since the patch applied in Ubuntu (
https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1696929 ) from 1.9.4-2
version, my touchpad is jumpy.

Pointing is jumpy when I need some precision (row size setting, e.g.), pointer
is jumpy (very small jumps) when I keep my finger at the same place.
Two-fingers scrolling is jumpy as well.

Daniel van Vugt says in LP bug report : "The patch in 1.9.4-2ubuntu1 is the
same as what's coming soon in libinput release 1.10. So a fix for your specific
touchpad should be done upstream. Simply reverting the patch won't help you
after we update to libinput 1.10, and besides most laptops seem to need that
patch."
https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1745816

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