yeah you were right, DP-1 is owned by the intel chip, so closing as
fixed by the kernel update
** Package changed: xserver-xorg-video-nouveau (Ubuntu) => xserver-xorg-
video-intel (Ubuntu)
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1130938
Title:
Black screen after resuming from suspend [Dell XPS 15z]
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