As far as I can tell this laptop is readily compatible with ubuntu 16LTS but installing ubunutu 14.04 on the dell xps 15 and getting in to function correctly takes time. Having said that,
I really like this laptop I'm really trying to like this laptop because its powerful, light and a battery life well over 6 hours. Anecdotally other people have also complained to me about the dell xps mainly about hardware issues.
``` sudo nano /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="quite splash acpi_rev_override=1" sudo update-grub ```
sudo apt-get install alsa-tools-gui hdajackretask