I also can confirm that the latest kernel update (4.8.0-28-generic) has
fixed the problem to connecting to the project through VGA.

I'm not sure if this is related, but the kernel update killed proper
docking for the same machine, see:

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  Ubuntu 16.10 no longer connects to Panasonic projector through vga

Status in linux package in Ubuntu:

Bug description:
  I have a Lenovo Thinkpad X250 and I was running 16.04 and regularly
  using a Panasonic PT-FIV430 FW430 WXGA projector with no issues. Once
  I upgraded to 16.10 the operating system no longer detects the
  projector through VGA (or if I use a mini-display adapter to connect
  to the mini-display port). The projector is not detected at all. I
  have confirmed that the VGA port works fine with a external monitor
  and it also does not work with a different Panasonic projector model
  (I didn't take that model number down).

  In close to ten years of Ubuntu use this is the first time I've had
  trouble connecting to something through the VGA.

  Is there anyway to force this connection? I have to use this projector
  in my classroom and I'm currently in a pickle.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: linux-image-4.8.0-27-generic 4.8.0-27.29
  ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
  Uname: Linux 4.8.0-27-generic x86_64
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
   /dev/snd/controlC1:  moorepants  31342 F.... pulseaudio
   /dev/snd/controlC0:  moorepants  31342 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov 16 10:22:16 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=00333301-992b-4a3e-a93f-f6ace66eec1d
  InstallationDate: Installed on 2015-11-14 (368 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20CMCTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-27-generic 
root=UUID=180cbbee-84f0-4f5d-8f67-ab39fe37099a ro quiet splash vt.handoff=7
   linux-restricted-modules-4.8.0-27-generic N/A
   linux-backports-modules-4.8.0-27-generic  N/A
   linux-firmware                            1.161
  SourcePackage: linux
  UpgradeStatus: Upgraded to yakkety on 2016-11-05 (10 days ago)
  dmi.bios.date: 06/19/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N10ET36W (1.15 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20CMCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40709 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.product.name: 20CMCTO1WW
  dmi.product.version: ThinkPad X250
  dmi.sys.vendor: LENOVO

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