Note that these are always hardware specific. You have Skylake, which is
known to be broken still on released kernels. Please test latest drm-
intel-next mainline build from

http://kernel.ubuntu.com/~kernel-ppa/mainline/

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https://bugs.launchpad.net/bugs/1634449

Title:
  Black flicker when leaving monitor

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Sometimes, when moving cursor from one monitor to the other, the
  external monitor turns black and gets back on again.

  The hardware is Dell Latitude E5470 with Docking Station and monitor
  connected via DisplayPort (checked both ports and happens on both of
  them).

  Everything worked correctly on Ubuntu 16.04, but it happens on Ubuntu
  16.10. Kernel 4.8.0-25-generic.

  The bug isn't related to cursor only, if focus changes by alt+tab it
  sometimes happens as well.

  
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503 This is the same 
bug as this one, but closed.
  --- 
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D0p:   vessel     5602 F...m pulseaudio
   /dev/snd/controlC0:  vessel     5602 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.10
  HibernationDevice: RESUME=UUID=56fab9c8-7226-47b9-91cb-a2c865f81bc0
  InstallationDate: Installed on 2016-08-31 (47 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  MachineType: Dell Inc. Latitude E5470
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-25-generic.efi.signed 
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.8.0-25.27-generic 4.8.1
  RelatedPackageVersions:
   linux-restricted-modules-4.8.0-25-generic N/A
   linux-backports-modules-4.8.0-25-generic  N/A
   linux-firmware                            1.161
  Tags:  yakkety
  Uname: Linux 4.8.0-25-generic x86_64
  UpgradeStatus: Upgraded to yakkety on 2016-10-14 (3 days ago)
  UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 06/15/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.7.3
  dmi.board.name: 0P88J9
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.7.3:bd06/15/2016:svnDellInc.:pnLatitudeE5470:pvr:rvnDellInc.:rn0P88J9:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E5470
  dmi.sys.vendor: Dell Inc.

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