[Bug 94479] [SKL] i915 external Displays flicker / turn black

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94479

--- Comment #14 from Ricardo Madrigal <ricardox.madrigal.maldonado at intel.com> ---
I just try to reproduce this issue, but I was not able to reproduce it, i am
using a 4k monitor + 2 monitors 1080p. 

I used an MST in order to emulate the DS. MST + latest kernel + 2 external
display through DP MST + 1 4K Monitor

This is my general configuration:

======================================
             Software
======================================
kernel version              : 4.13.0-rc2-drm-tip-ww30-commit-520e660+
architecture                : x86_64
os version                  : Ubuntu 17.04
os codename                 : zesty
kernel driver               : i915
bios revision               : 5.6
bios release date           : 09/29/2016

======================================
        Graphic drivers
======================================
mesa                      : 17.0.3
modesetting               : modesetting_drv.so
xorg-xserver              : 1.19.3
libdrm                    : 2.4.76
libva                     : 1.7.3-2
vaapi (intel-driver)      : 1.7.3
cairo                     : 1.14.8-1
intel-gpu-tools           : 1.17-1

======================================
             Hardware
======================================
platform                   : SKL Canyon
motherboard id             : NUC6i7KYB
form factor                : Desktop
cpu family                 : Core i7
cpu family id              : 6
cpu information            : Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz
gpu card                   : Intel Corporation Iris Pro Graphics 580 (rev 09)
(prog-if 00 [VGA controller])
memory ram                 : 31.31 GB
max memory ram             : 32 GB
display resolution         : 3840x1129
cpu thread                 : 8
cpu core                   : 4
cpu model                  : 94
cpu stepping               : 3
socket                     : Other
signature                  : Type 0, Family 6, Model 94, Stepping 3
hard drive                 : 223GiB (240GB)
current cd clock frequency : 540000 kHz
maximum cd clock frequency : 675000 kHz

Adding dmes.log

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