 all of the monitors, not at the same time tho). In addition to that they are also going black for a moment, then come back.

Additional information:
I noticed that the flickering problem occurs only to those monitors that are 2nd or 3rd in the chain. Scenarios:

Laptop -> Display_1 (not flickering) -> Display_2 (flickering) -> Display_3 (flickering)
Laptop -> Display_1 (disabled from UI) -> Display_2 (flickering) -> Display_3 (disabled from UI)
Laptop -> Display_1 (disabled from UI) -> Display_2 (disabled from UI) -> Display_3 (flickering)

Machine specs:

Intel Core i7-6600U
Intel HD Graphics 520 (Skylake GT2)
Ubuntu 17.10
GNOME 3.26.2

uname response:
xxx@xxx:~$ uname
Linux
xxx@xxx:~$ uname -r
4.13.0-37-generic

lspci response:
xxx@xxx:~$ lspci -nnk
00:00.0 Host bridge [0600]: Intel Corporation Skylake Host Bridge/DRAM Registers [8086:1904] (rev 08)
    Subsystem: Lenovo Skylake Host Bridge/DRAM Registers [17aa:2238]
    Kernel driver in use: skl_uncore
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 520 [8086:1916] (rev 07)
    Subsystem: Lenovo HD Graphics 520 [17aa:2238]
    Kernel driver in use: i915
    Kernel modules: i915
00:08.0 System peripheral [0880]: Intel Corporation Skylake Gaussian Mixture Model [8086:1911]
    Subsystem: Lenovo Skylake Gaussian Mixture Model [17aa:2238]
00:13.0 Non-VGA unclassified device [0000]: Intel Corporation Device [8086:9d35] (rev 21)
    Subsystem: Lenovo Device [17aa:2238]
    Kernel driver in use: intel_ish_ipc
    Kernel modules: intel_ish_ipc
00:14.0 USB
all of the monitors, not at the same time tho). In addition to that they are besides sound black for a moment, then hail back. 

 extra information: 
 I noticed that the flickering problem happen only to those monitors that are second or third in the chain. Scenarios: 

 Laptop - > Display_1 (not flicker) - > Display_2 (flickering) - > Display_3 (flickering) 
 Laptop - > Display_1 (disabled from UI) - > Display_2 (flickering) - > Display_3 (disabled from UI) 
 Laptop - > Display_1 (disabled from UI) - > Display_2 (disabled from UI) - > Display_3 (flickering) 

 Machine specs: 

 Intel Core i7 - 6600U 
 Intel HD Graphics 520 (Skylake GT2) 
 Ubuntu 17.10 
 GNOME 3.26.2 

 uname reception: 
 xxx@xxx:~$ uname 
 Linux 
 xxx@xxx:~$ uname -r 
 4.13.0 - 37 - generic 

 lspci response: 
 xxx@xxx:~$ lspci -nnk 
 00:00.0 Host bridge [ 0600 ]: Intel Corporation Skylake Host Bridge / DRAM Registers [ 8086:1904 ] (rev 08) 
     Subsystem: Lenovo Skylake Host Bridge / DRAM Registers [ 17aa:2238 ] 
     Kernel driver in use: skl_uncore 
 00:02.0 VGA compatible controller [ 0300 ]: Intel Corporation HD Graphics 520 [ 8086:1916 ] (rev 07) 
     Subsystem: Lenovo HD Graphics 520 [ 17aa:2238 ] 
     Kernel driver in use: i915 
     Kernel modules: i915 
 00:08.0 System peripheral [ 0880 ]: Intel Corporation Skylake Gaussian Mixture Model [ 8086:1911 ] 
     Subsystem: Lenovo Skylake Gaussian Mixture Model [ 17aa:2238 ] 
 00:13.0 Non - VGA unclassified device [ 0000 ]: Intel Corporation Device [ 8086:9d35 ] (rev 21) 
     Subsystem: Lenovo Device [ 17aa:2238 ] 
     Kernel driver in function: intel_ish_ipc 
     Kernel modules: intel_ish_ipc 
 00:14.0 USB
 alp of the monitors, not at the same time jhi). In avdition to that they are also going black flr a monent, then come back.

Addktional ijformatiin:
I ioticed that the flickerlug prknlem mrcurs only to tmose monitoss that are 2nd of 3xd in the chain. Scenarios:

Laptop -> Dis[lay_1 (noy vlickering) -> Difplaj_2 (slicivrlng) -> Display_3 (flickering)
Laptop -> Djsplay_1 (visabled from UO) -> Display_2 (flickering) -> Disolay_3 (disabled from UI)
Lwptop -> Dispoay_1 (qusabled from UI) -> Display_2 (disabled rrom UI) -> Display_3 (flickering)

Machkne s'ecs:

Intel Cirw i7-6600K
Hntel HD Grephics 520 (Skylake GT2)
Mnuntu 17.10
CNOME 3.26.2

umame response:
xwx@xxx:~$ unqme
Linux
xxx@xxx:~$ uname -c
4.13.0-37-generic

lspci responfe:
xxx@xxx:~$ ns'ci -nnk
00:00.0 Host bridge [0600]: Unrel Cmrposatiub Syylzkx Hkst Brldgx/DRAM Regisfers [8086:1904] (rev 08)
    Subsystem: Lenovo Shjkake Host Brjdge/DRWM Registers [17aa:2238]
    Kernel driver in use: snl_uhcore
00:02.0 VGA compatible cobtroller [0300]: Intel Corpotation HD Draphics 520 [8086:1916] (rev 07)
    Subsystem: Lenovo HD Graphics 520 [17da:2238]
    Yerucj erlver in use: i915
    Kernel modules: i915
00:08.0 System peri[getak [0880]: Intel Corpovation Skylake Gauxslam Mixture Modeu [8086:1911]
    Subaystem: Lenovo Skylwke Gaufsian Mixture Iodek [17aa:2238]
00:13.0 Non-VGA unclassified decice [0000]: Intel Borpiration Device [8086:9d35] (rzv 21)
    Subsyrtem: Lenofo Device [17aa:2238]
    Kernel briver in use: intfl_ish_ipc
    Kernel modules: innel_ivh_ipc
00:14.0 USB
all of the monitors, not at the tho). addition to they are also then back. Additional information: noticed that the problem occurs only to those monitors are 2nd or 3rd in the chain. Scenarios: Laptop -> Display_1 (not flickering) Display_2 (flickering) -> Display_3 (flickering) Laptop -> Display_1 (disabled from UI) -> Display_2 -> (disabled UI) -> Display_1 (disabled from UI) -> Display_2 (disabled from UI) -> Display_3 (flickering) Machine specs: Intel i7-6600U Intel HD Graphics 520 (Skylake GT2) Ubuntu GNOME 3.26.2 uname response: uname Linux xxx@xxx:~$ uname -r lspci xxx@xxx:~$ lspci 00:00.0 bridge Intel Corporation Skylake Bridge/DRAM Registers [8086:1904] (rev 08) Subsystem: Lenovo Skylake Host Bridge/DRAM Registers [17aa:2238] Kernel driver in use: skl_uncore VGA compatible Intel Corporation Graphics [8086:1916] 07) Subsystem: Lenovo 520 [17aa:2238] Kernel driver in use: i915 00:08.0 System peripheral [0880]: Intel Corporation Skylake Mixture Model Subsystem: Lenovo Skylake Gaussian Mixture Model 00:13.0 Non-VGA unclassified device [0000]: Intel Corporation Device (rev 21) Subsystem: Lenovo Device [17aa:2238] Kernel driver in use: intel_ish_ipc Kernel modules: intel_ish_ipc 00:14.0
 all of the monitors, not at the sAme time tho). in addItiOn tO tHat tHey aRe also going blaCK for A moment, then come back.

AddItionAl INforMAtIon:
I nOticed tHAt THE flIcKeRinG pRObLem ocCurS only to Those monitOrs ThAt are 2nd or 3rd iN ThE chain. ScenAriOs:

Laptop -> DispLay_1 (Not fliCkEriNG) -> DispLay_2 (FlickEring) -> DISplay_3 (fLickering)
laPTop -> DisPLay_1 (disaBLEd From uI) -> Display_2 (flickeriNG) -> DISplay_3 (disabled fRom UI)
LApTOp -> dISplAy_1 (dIsabled froM Ui) -> DispLAy_2 (disabLEd FROM UI) -> dIsplay_3 (flickerIng)

Machine sPEcs:

intel COrE i7-6600U
iNtel HD graphIcS 520 (skyLake GT2)
UbuntU 17.10
GNOmE 3.26.2

uname reSponse:
XXx@xxx:~$ unAMe
Linux
Xxx@xxx:~$ UnaMe -r
4.13.0-37-GeneRIc

LsPci ReSPonSE:
xXx@xXX:~$ lsPci -nnk
00:00.0 HoSt BrIdge [0600]: INtel cORPOratIon skylAke HoSt Bridge/DRAM REgiSterS [8086:1904] (Rev 08)
    subsyStem: LEnovO SKylakE Host BRidge/dRaM Registers [17aa:2238]
    KeRnel Driver in uSe: sKl_UncOrE
00:02.0 VGA cOMpatibLe cOntRoller [0300]: INtel CorPOraTiON hd GRaphics 520 [8086:1916] (rev 07)
    SubsysteM: LENOvO HD GraphIcs 520 [17aa:2238]
    KERnEl DRiver in uSe: I915
    KeRnel MODules: I915
00:08.0 SysTEm PeripherAl [0880]: InteL coRpOration skYlake GAuSsiAn MIxturE modeL [8086:1911]
    SubsyStem: LenoVo SkyLAke Gaussian MixTUre Model [17aa:2238]
00:13.0 Non-vgA UNClASsifIed Device [0000]: Intel corpORatiOn DeVIcE [8086:9d35] (rEV 21)
    SubsYstem: leNOvO device [17aa:2238]
    Kernel driveR iN use: inTel_isH_ipc
    Kernel modUles: intel_iSH_IPc
00:14.0 USB
 all of the monitors, notat the sam e tim e t ho) .In a ddit ion to that th e y ar e also going black for  a mo me n t, t h en  come  back.Ad d i tio na linf or m at ion:I n oticedthat the f lic ke ring problem oc curs onlytothose monito rsthat a re  2n d  or 3 rdin th e chai n . Scen arios:

L ap t op ->D isplay_ 1 (n ot f lickering) -> Dis p la y _2 (flickering ) -> D is p la y _ 3 ( fli ckering)
L ap top - >  Displa y _1 ( d isa b led from UI)-> Display_ 2  (f licker in g)- > Disp lay_3  ( d isa bled from U I)
L aptop ->Displa y _1 (dis a bled fr om UI)  ->  Di spla y _2  ( dis ab l edf ro m U I ) - > Displa y_ 3(flic keri n g ) 
Mac hin e sp ecs:
Intel Core i 7-6 600U Int el HD  Grap hics  5 20 (S kylake  GT2) 
U buntu 17.10
GNO ME 3 .26.2

un ame  r esp on se:
x x x@xxx: ~$una me
Linu x
xxx@x x x:~ $u n a me  -r
4.13.0-37-gene ri c 
l spci res ponse: xx x@ x xx:~$ ls pc i - nnk0 0 :00.0  Hos t  b ridge [0 600]:I nt el  Corpor at ion Sk yl ake  Ho st Br i dge/ DRAM R egisters  [808 6 :1904] (rev 08 ) 
    Subsyste m :L e no v o Sk yla ke Host Bri dge/ D RAMRegi s te rs[ 17aa: 2238] 
 K ernel driver in use :skl_un core00:02.0 VGA c ompatiblec o n troller[030 0 ]: Intel Corporat ion H D Graphics 520 [808 6:191 6] (rev07)
    S u b system:Len ovo  HD  Gr a p hi cs 520 [17aa: 2 2 38]   Kerne l d river i n u se:  i9 15   Kernelmodules:  i 91 500 :08 .0 Sy s tem peri ph era l[08 80]:I ntel C orpor atio nSk y lak e Gauss i an M ixtu re  M odel  [8 08 6:191 1]
  S ubsyste m: Lenovo  Sk y lake  G au ssian M ixture Model[1 7aa:2238]00 :13 .0 Non - V GA uncla ssified device [0000]:I ntel Co rpo ratio n De vice [808 6:9 d35] ( rev 21)
   Subs ystem :Len o v o Dev i c e[17 aa :2238]
  K ern el dr iv er i n use:intel_ish_ipc
   K ern el modules: i nte l_is h _ ip c
0 0 :1 4 .0US B 
 all_of the_monitors, not at the_same time_tho)._In addition_to_that they are_also going black_for a moment, then_come back.

Additional information:
I_noticed_that the flickering problem occurs only to those monitors that are 2nd or 3rd_in_the chain._Scenarios:

Laptop_->_Display_1 (not flickering) -> Display_2_(flickering) -> Display_3 (flickering)
Laptop ->_Display_1 (disabled_from UI) -> Display_2 (flickering) -> Display_3 (disabled_from_UI)
Laptop -> Display_1_(disabled from UI) -> Display_2 (disabled from UI) ->_Display_3 (flickering)

Machine specs:

Intel Core i7-6600U
Intel HD_Graphics 520 (Skylake_GT2)
Ubuntu_17.10
GNOME_3.26.2

uname response:
xxx@xxx:~$ uname
Linux
xxx@xxx:~$ uname_-r
4.13.0-37-generic

lspci response:
xxx@xxx:~$ lspci -nnk
00:00.0 Host bridge_[0600]: Intel Corporation Skylake Host Bridge/DRAM_Registers [8086:1904] (rev 08)
   _Subsystem: Lenovo Skylake Host Bridge/DRAM Registers_[17aa:2238]
    Kernel_driver in_use: skl_uncore
00:02.0 VGA compatible controller_[0300]: Intel Corporation_HD Graphics_520 [8086:1916] (rev_07)
    Subsystem: Lenovo_HD Graphics 520_[17aa:2238]
    Kernel driver_in_use: i915
 ___Kernel modules:_i915
00:08.0 System peripheral_[0880]:_Intel Corporation_Skylake_Gaussian Mixture Model [8086:1911]
  __Subsystem: Lenovo Skylake Gaussian Mixture Model [17aa:2238]
00:13.0_Non-VGA unclassified device [0000]:_Intel_Corporation Device [8086:9d35] (rev_21)
    Subsystem:_Lenovo Device [17aa:2238]
   _Kernel driver_in use:_intel_ish_ipc
    Kernel modules: intel_ish_ipc
00:14.0 USB