mouse pointer shakes continuously while finger is on touchpad

still exists in beta2. this looks like a driver issue. ubuntu 16.04 doesn't experience this issue, and xinput list-props 12 shows a load of synaptics commands (and crucially the Device Accel Constant Deceleration property), whereas loki doesn't.
I think this will affect quite a few Dell owners.

With a lot of playing around I appear to have worked around the issue. The synaptics drivers weren't getting loaded, instead libinput is used instead.
I had to install xserver-xorg-input-synaptics, then force the synaptics driver to load, (i think this was achieved by moving the /usr/share/X11/xorg.conf.d/90-libinput.conf to 45-libinput.conf)
As soon as synaptics driver is loaded then the touchpad works fine, also synclient now reports the touchpad settings, as does libinput --list-props <device id>
Note that ubuntu loads the synaptics driver and doesn't have the 90-libinput.conf file at all.

Lenovo laptop here, and I am affected by the bug. Very very annoying issue.

Hello Guilio,

Can you please advise on the exact model of your input device you have?

This affects my Lenovo G510 - unsure how to determine the exact model of the touchpad (my google-fu is failing me), but 'cat /proc/bus/input/devices' yields
I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input5
U: Uniq=
H: Handlers=mouse0 event12
B: PROP=9
B: EV=b
B: KEY=6420 30000 0 0 0 0
B: ABS=260800011000003
if that's any help.

Also, the fix in #3 worked for me

confirmed by various other users after Loki release on g+ with other laptops too, exhibiting a variety of symptoms but all related to libinput

It affect my Dell latitude E6430 too!

its still doing it on the latest build of loki. not nearly as bad but it
still shakes

On Wed, Sep 14, 2016 at 7:50 PM, Mohammad Alshehabi <<email address hidden>
> wrote:

> It affect my Dell latitude E6430 too!
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1593893).
> https://bugs.launchpad.net/bugs/1592432
>
> Title:
> mouse pointer shakes continuously while finger is on touchpad
>
> Status in elementary OS:
> Confirmed
>
> Bug description:
> in freya my mouse pointer is stable, but in loki beta 1 live usb, with
> the finger on the touchpad , the mouse pointer shakes constantly.
> using the nipple mouse is OK, also OK when i don't touch the touchpad
> using AlpsPS/2 dualpoint touchpad on Dell Latitude E7440
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/elementaryos/+bug/1592432/+subscriptions
>

@Zisu Andrei, sorry I never got back to you. Here's the info you requested:

I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse0 event7
B: PROP=9
B: EV=b
B: KEY=6420 30000 0 0 0 0
B: ABS=260800011000003

Hey Giulio,

Can you please list the model number from your laptop spec? It's not immediately obvious which device you have.

Lenovo G580 (SKU Number: LENOVO_MT_2189)

Hi,

I had the same problem, which I described here: https://elementaryos.stackexchange.com/questions/8413/shaky-mouse-pointer-when-using-touchpad. I fixed it with these commands (thanks to wolf from Stackexchange):
1.) sudo apt install xserver-xorg-input-synaptics
2.) sudo mv /usr/share/X11/xorg.conf.d/90-libinput.conf /usr/share/X11/xorg.conf.d/45-libinput.conf
After reboot everything works fine.

I use Dell N5050 and touchpad model is "AlpsPS/2 ALPS DualPoint TouchPad".

I hope this helps - I'm reporting Linux bug for the first time:)

Hi,

I'm using Elementary OS Loki on SF310 Samsung Laptop and that bug only happen when I keep two fingers on my laptop touchpad in some applications (It not happen with Chrome or Firefox for example).

Well, I try Filip's proposed solution also work for me and now everything is working fine.

Sorry my English, it is not my native language.

I have an HP Probook 450 G1 with the same problem. The fix posted above fixes the problem for me.

I was having the same issue (e.g. mouse pointer panicking) with my Lenovo Thinkpad L440, and following the steps in comment #3 appears to have fixed it. THANK YOU!!!

Same issue with shaky cursor when using the trackpad with one finger on Dell Latitude 7240.
Fixed with steps in comment #3.

Same issue using Loki on Macbook 3,1

Dell XPS L 502X.
issue: Shaky cursor

Distributor ID: elementary
Description: elementary OS 0.4 Loki
Release: 0.4
Codename: loki

why is this bug marked as fixed? i don't think it is?

I believe the error is with libinput. It has been fixed in the newer versions of libinput, so if you build from source you're going to get rid of the function.

Otherwise, the bug is going to be present until a newer version of libinput will be shipped.

#3 worked on Latitude E5540. Thanks!

Having the same issue...

but I cannot execute this command:
sudo mv /usr/share/X11/xorg.conf.d/90-libinput.conf /usr/share/X11/xorg.conf.d/45-libinput.conf

Latitude-E5470:~$ sudo mv /usr/share/X11/xorg.conf.d/90-libinput.conf /usr/share/X11/xorg.conf.d/45-libinput.conf
mv: cannot stat '/usr/share/X11/xorg.conf.d/90-libinput.conf': No such file or directory

Latitude-E5470:/usr/share/X11/xorg.conf.d$ ls
10-evdev.conf 11-evdev-quirks.conf 51-synaptics-quirks.conf
10-quirks.conf 11-evdev-trackpoint.conf 70-synaptics.conf

any advice?