Login loop Ubuntu 18.04 after installing packages

Question

Yesterday I installed Linux Ubuntu 18.04 for the first time on my laptop. I was just discovering and customizing my dock when I had the brilliant idea to simulate macbook touchpad.

I followed this link blindly :

https://int3ractive.com/2018/09/make-the-best-of-MacBook-touchpad-on-Ubuntu.html

First the mouse was not sensitive at all, and then I had the login loop problem.

Now I have no idea what to do since I'm an absolute newbie.

Answer 1

I resolved my problem by removing the file /usr/share/X11/xorg.conf.d/50-mtrack.conf just as @CharlesGreen suggested.