I have a Dell Inspiron 15 (3558). Ever since I upgraded to Ubuntu, there have been problems where the touch-pad randomly jumps when using it. For example I could be scrolling up and the cursor would instantly jump to the top at the slightest touch. I lowered sensitivity in settings but that doesn't seem to help. I read a solution online where the touch-pad sensitivity seems to be fixed but the tap-and-click function doesn't work. I don't want to sacrifice the tap-click function for sensitivity. Here are the results of xinput:

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  • I've had jumpy touchpad issues on my HP and MSI laptops for a long time, yet it works fine in Windows. I gave up trying to solve it and found it much easier to just disable the touchpad and use a mouse. I'm interested to see if a working solution presents itself. – Dorian May 31 '18 at 17:32

I observe the behavior persists only when my laptop is plugged in. Found that one when I was looking through this link.

One temporary hack is by placing your hand on the keyboard or any metal part of your laptop to ground it.

protected by Community Jun 21 '18 at 8:45

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