I have the same problem on my Dell XPS 9510 Windows11 Laptop. I will never buy a Dell product again. It seems to me that Dell does not care to work through the bugs in there laptops to make sure they work properly before selling them to the public. A new expensive computer should not do this after buying it. The customer should not have to figure this problem out!

I had touchpad jittering on my Dell XPS. I put a book below my laptop, such that there was a space for airflow. After a minute, the touchpad got magically fixed. I think it has something to do with the temperature of the laptop or the temperature of the battery.

Also, forgot to add, external mouse works fine. 

First thing to check is the condition of the battery.  Remove the base cover and examine the battery carefully for signs of swelling.  If it's at all swollen, remove and dispose of it immediately, and order a replacement.  It's very common for touchpad problems to be the first sign of a swollen battery.

@ejn63​ hi, when I tore it down there was no evidence of the battery swelling out of its compartment at all, but I didn’t remove it to check further. I figured if it was swollen it would no longer be flush with the surround of its housing 

If the battery is OK, then it's time to replace the touchpad (if your system model allows that;  older ones do). If it's a newer system, it's the keyboard-palmrest assembly you'll need to replace.  You'll need to provide the model number (XPS 9550, 9520, etc.).

I too have had this exact issue since May, I have an XPS 15 9500, do you by any chance have the same model and have you found a fix yet other than replacing the whole touchpad?

This is an issue for me too, I've heard that the only solution is disabling touchscreen, but I am wondering if anyone has heard of another solution that doesn't require the removal of touchscreen functionality.

Similar to another user above, an external mouse works fine. Occasionally, the trackpad functionality returns to normal when I restart the laptop, but this is not a guarantee.

I'm using an XPS 15 9510.

For anybody that has this similar problem.  I've experience on/off erratic touchpad issues for some years now and was ready to toss this laptop.  After reinstalling windows, drivers, unchecking power consumption boxes, and troubleshooting battery / overheating issues, I may have found the issue that has so far worked for my XPS 9730.  Grounding issues can present with some inconsistent and weird issues and (crossing my fingers) have worked so far.

https://www.youtube.com/watch?v=4xGq5gmKEAA&t=309s

I've researched this widespread issue and looks to have had similar problems for years without any fix or real troubleshooting.  Although so far I do not have any other issues, after this laptop goes out, I won't be getting a new Dell.

I thought it was me alone. At first Everything was okay but all of a sudden the touchpad started acting weird.

Will tell ever do something about this?