This guide is outdated and for reference material only! Please use the new and up-to-date guide now !
Update 10/09/2015 : New guide is live!
Update 31/08/2015 : Barton George announced the incoming A06 Bios version permanently fixing keyboard repeating issue. A lot of others fix are coming (Kernel panics when switching wireless networks, Suspend resume and trackpad cursor freezing). I will try to promptly write a new and simpler guide including all those new bug-fixes once they have all been confirmed working properly.
Update 31/07/2015 : Bios A05 is out ! Changelog is “Improved Keyboard behaviour” (maybe fix the keyboard repeating issue on Linux) and “Windows 10 Support”.
Update 29/07/2015 : Fixed power saving script witch was not automatically launched.
Update 22/07/2015 : Kernel 4.1.3 fixed broken microphone.
I recently bought a XPS 13 2015 Developer edition. It is a great laptop equipped of an Intel Core i7-5500U, 8 Go of ram, a 512 Go SSD and a QHD+ (3 200 x 1 800) touch display.
I primarily bought the XPS because it was shipped with Ubuntu 14.04. Dell is working hard to make everything working correctly with their hardware (see Project Sputnik). But there are still a load of problems and complains about the Linux support on this laptop :