Ubuntu: Ubuntu touchpad issues - mouse pointer jumps around



Question:

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)]  


Solution:1

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.


Solution:2

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.


Solution:3

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.


Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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