https://bugs.freedesktop.org/show_bug.cgi?id=105640
GitLab Migration User changed:
What|Removed |Added
Resolution|--- |MOVED
Status|NEEDIN
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #14 from Peter Hutterer ---
You should try 1.11rc1, it has the new touchpad pointer accel with reduces the
basic speed. This should make the issue more-or-less disappear.
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https://bugs.freedesktop.org/show_bug.cgi?id=105640
Peter Hutterer changed:
What|Removed |Added
Status|NEW |NEEDINFO
--- Comment #13 from Peter Hu
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #12 from Peter Hutterer ---
> (EE) event19 - Synaptics tm2964-001: kernel bug: Touch jump detected and
> discarded.
Right, so this means even without the patch, libinput discards some jumping
motion.
> On Xorg with synaptics touch
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #11 from Anton ---
Hello. Same problem on my Lenovo t440. Slowly motions cause cursor jumpy. On
Xorg with synaptics touchpad work perfectly.
I tried patch from first comment , the problem was slightly resolved, but it
remained.
Syst
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #10 from L Holland ---
By the way, FWIW, I get lots of these in my logs:
(EE) event19 - Synaptics tm2964-001: kernel bug: Touch jump detected and
discarded.
Not sure if this is connected - they don't necessarily occur at the same t
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #9 from L Holland ---
It's certainly possible that the patch helped somewhat; it's just really hard
to distinguish subjectively between the level of "jumpiness" between restarts.
All I can say is that as things stand it is still chal
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #8 from Peter Hutterer ---
fwiw, I pushed the quirk out for now because I do think it helps, even if it
doesn't remove the issue.
commit 238ffd322728ed386bf59c79f5f7016fe4349944
Author: Peter Hutterer <>
Date: Mon Mar 19 15:39:22
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #7 from Peter Hutterer ---
Did you notice any changes in the behaviour with the patch applied? Looking at
this latest recording, there are two categories of jumps:
6.735493: | *** | *** | ***
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #6 from L Holland ---
Created attachment 138269
--> https://bugs.freedesktop.org/attachment.cgi?id=138269&action=edit
New evemu recording
Yes, I've restarted since updating hwdb, to no avail :-( I'm attaching another
evemu recordi
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #5 from Peter Hutterer ---
I'm assuming you restarted your session after the hwdb updates so libinput can
pick it up? In that case - there's no ready answer to your cursor jumps, sorry.
One or two more recordings won't hurt, just to
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #4 from L Holland ---
Ok, so I followed all the instructions there (sorry, that was totally findable,
should have known there would be good docs on how to do that!). Here's the
output of udevadm info for the device:
P: /devices/rmi4
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #3 from Peter Hutterer ---
https://wayland.freedesktop.org/libinput/doc/latest/udev_config.html#hwdb has
the list of things you need to be careful of, particularly running udevadm hwdb
--update and checking the property is set for th
https://bugs.freedesktop.org/show_bug.cgi?id=105640
--- Comment #2 from L Holland ---
Ok, just want to check that what I did was correct here. Rather than rebuilding
and reinstalling (I'm currently running libinput 1.10.3 from the Arch Repo) I
just manually applied the patch to
/usr/lib/udev/hwdb
https://bugs.freedesktop.org/show_bug.cgi?id=105640
Peter Hutterer changed:
What|Removed |Added
CC||peter.hutte...@who-t.net
--- Comment #
https://bugs.freedesktop.org/show_bug.cgi?id=105640
Bug ID: 105640
Summary: Lenovo T440p - slow fine touchpad movement makes
cursor jump
Product: Wayland
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Lin
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