Dell XPS 13 flickering issue with Ubuntu 16.04

Maybe a bit off topic. But this config solved my flickering issues on my Dell XPS 13 (9350) with the Intel HD Graphics 520

add /usr/share/X11/xorg.conf.d/20-intel.conf

Section "Device"
    Identifier "Intel Graphics"
    Driver "intel"
    Option "AccelMethod" "sna"
    Option "TearFree" "true"
    Option "DRI" "3"
EndSection

Restart your X

systemctl restart lightdm

And any flickering should be gone.

Update: With kernel 4.4.0-42-generic Screen and Touchscreen are working after suspend.