RE: Please fix the XPS 13 (2015) 9343 touchpad / trackpad
If you wouldn't mind elaborating, did you let Ubuntu automatically detect the touchpad and install drivers/firmware, or did you pull the drivers from somewhere online and install them?
On a related matter, I came across a Dell developers forum focused primarily on Ubuntu and the XPS 13 (project Sputnik). There seems to be some fairly high level Dell developers following along and taking notes. If anyone wants to take it upon themselves, I bet posting a summary of the touchpad issues and a link to this thread over there would be an effective way to run this up Dell's flagpole.
I'll be trying to get in touch with 'Tier 3' myself. I don't expect a fruitful reply, but at the very least I'm hoping the customer feedback doesn't fall on deaf ears. And of course I'll share the reply here.