Lesson, delete everything on the partition that you want to make boot disk… Problem came from the boot disk instead of of Ubuntu and Dell
I’ve tried many time with ubuntu-16.04.4-desktop-amd64.iso . The ubiquity crashed with some errors
debian-installer/locale doesn't exist
Upgraded ubiquity as comment here https://askubuntu.com/questions/1033179/ubuntu-18-04-installer-crashes-on-dell-xps-15-9560
But no successful. I even tried with 16.04.4…
Solution: Using `ubuntu-18.04-live-server-amd64.iso`
The installation went well without any problem using UEFI (Please verify your BIOS) http://www.dell.com/support/article/us/en/04/sln297060/xps-13-9343-how-to-install-ubuntu-developer-edition-1404-on-a-dell-pc-configured-for-the-unified-extensible-firmware-interface-uefi-bios?lang=en
Please mind you need to have a LAN cable to make the installation and get other packages from the Internet. The wireless driver doesn’t include.
Login to the first time then run
sudo apt-get upgrade sudo apt-get install ubuntu-desktop
It might be 4 years since the last time I installed Ubuntu. Now it took me 6 hours to do that :)).