Fix the display link Ubuntu. When another monitor is plugged in and when at stand alone, monitors turn off and on or the display link fails. My laptop is a dell.

Ubuntu 16.04

lshw -c video output

WARNING: you should run this program as super-user.
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:27 memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:3000(size=64)
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.