I want to preface this by saying that I am completely new to using Ubuntu and Linux in general, so I would very much appreciate thorough yet easy-to-understand answers.
So I decided to get a feel for Ubuntu by using a live USB before I install it, but I quickly encountered this serious problem. Basically, the touchpad stops responding to input approximately 1-2 min after reaching the desktop. At first it works like normal (i.e., I am able to left and right click, and it responds to one- and two-finger inputs) but it completely stops responding after a short time. A USB mouse I have on hand works fine, however.
Notably, this issue is made worse by the fact that I cannot even access the internet either, which is a separate issue I posted about here: Wifi issue on Dell XPS 15 9560 . Understandably, it is difficult to troubleshoot this touchpad issue when you can't access the internet to find solutions.
Thank you for any assistance you can provide