edit: I realize after posting this it might not be relevant since you may be discussing the trackpad as used with Ubuntu. As of 1 month ago, when I bought and

edit: I realize after posting this it might not be relevant since you may be discussing the trackpad as used with Ubuntu. As of 1 month ago, when I bought and then returned an XPS 15 due to the trackpad, there was no option for middle clicking and no option for navigating forward/back. There are also horrific sensitivity issues with the trackpad that is extremely well documented in user complaints online - the cursor doesn't start moving until your finger moves about a millimeter on the trackpad, resulting in it "jumping" when you are moving very small distances with high cursor speed. These are all software issues - I installed Synaptics and it fixed these problems, but introduced others. I spent over 20 hours testing and researching and messing with the registry to have a trackpad that works the same as most any other laptop with Windows 7 or Windows 8.1. I obviously didn't succeed, which is why I returned it. To clarify, this is really a Windows 10 issue, and to some extent an Synaptics driver issue (even though it isn't officially supported by Dell).