Wireless broken, xps 13 on 16.04

Found in other answers, this is how I fixed the problem: sudo lshw -C network

*-network
    (...)
    logical name: wlp58s0
    (...)

I then ran sudo ifconfig wlp58s0 up and after that sudo service network-manager restart. This fixed my wifi and after reboot it is still working.

Since the dell xps13 (9350) has had many troubles with wifi, I hope this will help others to fix theirs too.

EDIT: This only fixes it once, after reboot the same steps have to be performed again to get it back on.

Disabling secure boot in the BIOS solved the problem for me. I found the answer on the dell forums. (http://en.community.dell.com/support-forums/laptop/f/3518/t/19683197)