Bug 96290

Summary: Cursor is over excited and jittering all the time
Product: Wayland Reporter: cooks.go.hungry
Component: libinputAssignee: Wayland bug list <wayland-bugs>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium CC: cooks.go.hungry, peter.hutterer
Version: 1.2.x   
Hardware: Other   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments: scroll.evemu
xinput_list-props_Touchpad_Information.txt

Description cooks.go.hungry 2016-05-31 11:22:12 UTC 
I have found that since installing this package that (unlike before the installation) my cursor seems over excited all the time as even when I just have my finger on it but am not moving it really at all it is jumping up and down very quickly and always jittering (this is very annoying if one is trying to go down a page by pulling the side-bar down with the cursor for it jumps up and down most of the time and shakes and when try to be move still). I also (no matter how I adjust the speed in the gnome-control-center) can't seem to get it to be the right speed, it's either too fast or too slow (it was just the right speed and non of the jittering before installing this package, now with this package it seems practically impossible to get it right) and no matter the speed setting, it is always jittering about, maybe there needs to be some way of also changing touchpad sensitivity or something because this cursor is just crazy.

It also seems as though I am not the only one with these problems: https://bugs.launchpad.net/ubuntu-gnome/+bug/1586657/comments/8

I initially reported this issue here but thought I should also do so upstream: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1586686

The issue is with the "xserver-xorg-input-libinput" package though I was told to report it under this one, the version of that package is "0.18.0-1" and I am running Ubuntu GNOME 16.04 with GNOME 3.20 (more information is provided in the downstream bug report I linked). I selected the version number "1.2.x" for this bug because the only package with a similar name that I could find on my system ("libinput10") had the version number of "1.2.3-1ubuntu1". I hope that I am filing my report in the correct place.
Comment 1 Peter Hutterer 2016-06-02 06:24:13 UTC 
Please look at https://wayland.freedesktop.org/libinput/doc/latest/reporting_bugs.html and provide the info listed there, thanks.
Comment 2 cooks.go.hungry 2016-06-02 17:37:23 UTC 
I have already provided the version number, but will attach the evemu-record output and the 'xinput list-props' output. Here is the contents of the "/sys/class/dmi/id/modalias" file:

dmi:bvnLENOVO:bvrH5ET69WW(1.12):bd11/15/2012:svnLENOVO:pn62742SG:pvrLenovoB590:rvnLENOVO:rn62742SG:rvrWin8ProDPKIPG:cvnLENOVO:ct10:cvrNotAvailable:

And I have a Lenovo B590 laptop. I am not absolutely certain of the dimensions of my touchpad, but I have used my huge meter long ruler which also deals in mm to try to establish this, so as far as I can tell it's:

length: 94mm
width: 57mm
Comment 3 cooks.go.hungry 2016-06-02 17:38:27 UTC 
Created attachment 124276 [details]
scroll.evemu
Comment 4 cooks.go.hungry 2016-06-02 17:39:23 UTC 
Created attachment 124277 [details]
xinput_list-props_Touchpad_Information.txt
Comment 6 Peter Hutterer 2016-06-10 06:09:00 UTC 
ommit 27078b2667def4ecde1f47b8258d510a576c8bb1
Author: Peter Hutterer <peter.hutterer@who-t.net>
Date:   Fri Jun 3 11:19:23 2016 +1000

    touchpad: restore the hysteresis by default

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