Bsrgvty

I am having major issues with Ubuntu touchpad on a Dell Latitude 3570 Laptop. If I use a USB mouse, everything works fine, but if I use a touchpad it is very hard to control. For example, if I want to click on something that is in the middle of the screen, I click, but for some reason Ubuntu THINKS I have clicked at the bottom Left-Hand corner of the screen, and thus opens the rubbish bin. It is REALLY making me angry.

I read somewhere that the following changes to synclient would fix it:

synclient FingerLow=9
synclient FingerHigh=10

These don't work. And in any case as soon as I reboot the machine, synclient resets back to defaults (FingerLow=25, FingerHigh=30), so even if they did work I would have to set them every time I rebooted the machine!

Is there anything else I can try? This is driving me insane. For the sake of my sanity, please help me before I smash up my laptop.

As requested, xinput list gives me the following:

⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ DLL06F3:00 06CB:75DA Touchpad id=12 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=14 [slave pointer (2)]
⎜ ↳ USB Optical Mouse id=17 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
 ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
 ↳ Power Button id=6 [slave keyboard (3)]
 ↳ Video Bus id=7 [slave keyboard (3)]
 ↳ Video Bus id=8 [slave keyboard (3)]
 ↳ Power Button id=9 [slave keyboard (3)]
 ↳ Sleep Button id=10 [slave keyboard (3)]
 ↳ Integrated_Webcam_HD id=11 [slave keyboard (3)]
 ↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]
 ↳ Dell WMI hotkeys id=15 [slave keyboard (3)]
 ↳ DELL Wireless hotkeys id=16 [slave keyboard (3)]

Well, following advice from user WinEunuuchs2Unix, I DID google this. Apparently it is a major bug, has been since Ubuntu 14.04. Anyway, on the bug report page, a guy called Juan Hernandez (juanhm) suggested that installing xserver-xorg-input-libinput worked for him. I wanted to try this, so I typed:

sudo apt-get install xserver-xorg-input-libinput

and I got a message about broken dependencies, but it also said that the above package depended on xserver-xorg-core, so I tried running:

sudo apt-get install xserver-xorg-core

This installed a whole lot of xserver-xorg packages. I then ran:

sudo apt-get install xserver-xorg-input-libinput

and this time it worked. Next I rebooted, and tried to run:

sudo apt-get remove --purge xserver-xorg-input-synaptics

but it had already been removed. My touchpad in System Settings is now a very very simple dialogue, BUT the pointer doesn't seem to be jumping around anymore! The only disadvantage I can see is that I can no longer tap the touchpad to click (I have to use the buttons), but I wasn't doing that anyway!

So I do believe this is now working!

The bug report page is here: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1574667

I will update it to confirm that Juan Hernandez's suggestion worked.

I am using Razer Blade Early 2017 and my touchpad is Synaptics TM2438-005 running Ubuntu 18.04 Bionic Beaver

I was looking everywhere for a solution and had to dig through the history of synclient, being replaced by libinput and the corresponding cli tool xinput.

But this article solved my problem and more specifically, simply installing libinput-tools

$ sudo apt install libinput-tools

Bionic Beaver is not using Unity as a GUI server but uses Gnome instead, so I am guessing all the dependencies are in there already (xserver-core, libinput etc.)

For anyone who is having issues on Ubuntu 18.04 - this solved my problem and I have a semi-working touchpad now. It still jumps occasionally, but that's once per 10 new touch presses, it used to be every ~millisecond.

In my case @SamuelH solution didn't work since everything was already installed and up to date. What I helped was

• Disable Natural Scroll


• Enable Edge scrolling
  


• Reduce touch pad speed
  


• Disable Tap to click
  

Machine:

Dell E6540

OS:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic

Please refer to this solution by Alucard

I have tested this with the same laptop being a Latitude E5470 running Bionic Beaver with all the latest updates.

It would seem that the pointer stick or the "nipple" is what causes the cursor to randomly jump. If you have your backlit keyboard enabled you will see it switch on when the cursor jumps.

For ease of use I will paste Alucard's solution below:

1) Type in terminal:

xinput list

Look for something like "AlpsPS/2 ALPS DualPoint Stick". Look for a field "ID=xxx" of that particular device.

2) Type in terminal:

xinput -list-props ID of Dualpoint Stick

One of the lines should be something like: "Device Enabled (142): 1" Take note of the ID, which is 142 in this case).

3) Disable Dualpoint Stick: (Setting value to 0 is the same as disabling the device)

xinput -set-prop ID of Dualpoint Stick 142 0

I had this same issue. I solved it by installing Ubuntu 16.04 then updating to 18.04. I think it is some problem with the firmware.

I had the same problem with my computer. I went through the various fixes and found there are several reasons for the problem consequently several different possible solutions. I isolated the hard drive with no change. The problem was not in the HD. I isolated the bios and cashe with no change. The only thing left since I have a touch screen was the touch screen chip. To fix that I simple put my finger on the icon as it rested in the upper left corner of the screen and dragged it down to the centre of the screen. It worked for a few minutes then went back to the corner again. I used my finger on it again this time it stayed and has not acted erratic again. Hope this helps.