Dual display over usb c on new MacBook 2016

I'm trying to get 1 usb c cable out of our new 2016 MacBook to drive to external displays (not mirrored but extended). Ever dock I look at that has 2x outs says that the new MacBook can only mirror two displays. See except below. Has anyone been able to do this? I would appreciate any help you can give.


Thanks so much!

Rob


http://www.macworld.com/article/3162727/macbook-accessories/caldigit-usb-c-dock- review-a-full-featured-usb-c-dock-with-b…


CalDigit’s dock supports up to the 4096 x 2160 pixel resolution at 60Hz maximum on the MacBook Pro. But as noted above, it can’t drive two external monitors as distinct displays through its two ports.

The company says that stems from a choice Apple made in implementing multi-stream transport (MST). MST differs from single-stream, in that it allows multiple distinct video desktops to pass over a single connection. This manifests itself both as monitors that combine two streams into a single display, and as adapters like this one that can split two desktop signals to appear on two separate displays.

While Apple says its 2015 and later MacBook Pro models can handle an MST display, handling two displays is off the table for now. CalDigit says a specific MST function called “MST hub” is not turned on in macOS, but believes Apple could enable it later. With Windows, the dock can drive two separate external displays on a capable Windows system.

Posted on Feb 17, 2017 11:03 AM

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Posted on Dec 6, 2017 2:59 PM

I have an early 2016 MacBook. I wanted to have access to more ports. Following @kenmaryj Apr 23, 2017, 1:30 AM post, I tried the Diamond Multimedia Ultra Dock Dual Video USB 3.0/2.0 Universal Docking Station (DS3900V2). I drive a hp EliteDisplay E242 and a hp Pavilion 27xw through this docking station.


It comes with the necessary cables. Just make sure, that sometimes even after downloading the display link drivers, the monitor doesn't light up. If that happens, right after installing, when it prompts to restart, DO NOT Restart.

Open system preferences --> security and privacy --> general tab --> there will be a allow button which will suggest DisplayLink driver is blocked --> click allow.

Then go back to the installation window and click Restart. The monitor should light up after your machine boots up!

23 replies
Question marked as Top-ranking reply

Dec 6, 2017 2:59 PM in response to rcreff

I have an early 2016 MacBook. I wanted to have access to more ports. Following @kenmaryj Apr 23, 2017, 1:30 AM post, I tried the Diamond Multimedia Ultra Dock Dual Video USB 3.0/2.0 Universal Docking Station (DS3900V2). I drive a hp EliteDisplay E242 and a hp Pavilion 27xw through this docking station.


It comes with the necessary cables. Just make sure, that sometimes even after downloading the display link drivers, the monitor doesn't light up. If that happens, right after installing, when it prompts to restart, DO NOT Restart.

Open system preferences --> security and privacy --> general tab --> there will be a allow button which will suggest DisplayLink driver is blocked --> click allow.

Then go back to the installation window and click Restart. The monitor should light up after your machine boots up!

Oct 23, 2017 11:46 AM in response to rcreff

I was able to work this out after finding very little information online and being told by Apple that it could not be done.


  1. I purchased this device: http://plugable.com/products/ud-ultcdl/
  2. Downloaded the plug-ins available from their website: http://plugable.com/drivers/displaylink
  3. Plugged the usb-c cable from the MacBook Pro to the usb-c input on the back of the device.
  4. !!! Now have two external monitors running extended via HDMI outputs from the device.


Loving it!!

Oct 9, 2017 8:24 AM in response to Nev369

Hi Nev369,

I followed your instructions and now have my two Asus monitors in extended view. I was very frustrated moving from my Microsoft Surface Book and dock where it was easy to a 2016 Macbook Pro and it wouldn't work! I followed your directions and purchased the Diamond Multimedia Ultra Dock Dual Video USB 3.0/2.0 Universal Docking Station with Gigabit Ethernet, HDMI and DVI Outputs Audio Input and output for Laptop, Ultrabook, Macbook, Windows 10, 8.1, 8, 7, XP,Mac OS and Android 5.0 and higher. Display Link Certified, DL- 3900 Chip. this was the cheapest option I could find in the UK and it worked like a dream! Thank you!

May 7, 2017 8:37 PM in response to orangejon

This is simple.


  • Use something cheap like this Lenovo USB 3.0 Dock
  • Connect said dock to your new mac with a USB C to B cable like this one
  • Download Display Link drivers
  • Connect two monitors to the USB Dock
  • Enjoy a single cable solution while extending (not just mirroring) to two separate displays


All this without any need for snark towards people that are simply trying to help you too!

Apr 23, 2017 1:30 AM in response to rcreff

Yes, I am using two external displays (Dell U2410 and U2415) with the MacBook 2016.


Apple USB-C Digital AV Multiport Adapter connected to USB-C port.

HDMI to HDMI cable from adapter to U2415.

USB cable from adapter to Diamond Multimedia Ultra Dock Dual Video USB 3.0/2.0 Universal Docking Station (DS3900V2)

HDMI to HDMI cable from docking station to U2410.

Wired keyboard and other USB peripherals connected to docking station.


I installed the DisplayLink driver from http://www.displaylink.com/downloads/macos. (Before doing this, the U2410 did not light up.)

Also, note some issues with Sierra here: http://support.displaylink.com/knowledgebase/articles/949426. (I was getting some flickering in the Safari title bar, but after clicking System Preferences -> Accessibility -> Display -> Reduce transparency, the flickering went away.)


Ken

Jun 22, 2017 4:45 PM in response to Nev369

This is simple.


  • Use something cheap like this Lenovo USB 3.0 Dock
  • Connect said dock to your new mac with a USB C to B cable like this one
  • Download Display Link drivers
  • Connect two monitors to the USB Dock
  • Enjoy a single cable solution while extending (not just mirroring) to two separate displays


-------------------


I have this same setup. The only problem I have is that it is impossible to find a DVI-D to DisplayPort cable. Unfortunately the two displays I'm trying to connect to only have VGA and DisplayPort inputs.


For the life of me I can't find a DVI-D to DisplayPort convert. It is as if everyone assumes you need to go FROM DisplayPort to DVI... never the other way.


I'm afraid for my use case, I'm going to have to get an active DVI-D to VGA converter to run my second display.

Aug 17, 2017 10:25 PM in response to Nev369

Thanks for the suggestion, didn't know that DisplayLink had MacOS drivers.

I have now set up with Lenono ThinkPad USB 3.0 dock (version ULTRA).

Connected two displays (1 HDMI and 1 Display Port) > USB 3-dock > USB-B to USB-C cable to the MacBook Pro 2016


The issues that I experience are:

  1. I can't close the lid and just run the two external displays. The MBP does into sleep. This is not happening with the Kensington SD4600p dock. So I must run three screens now 😟
  2. The corrupted menu in FINDER as confirmed even by DisplayLink (Known issues)
  3. The smoothness of the visuals are somehow reduced. It doesn't feel as smooth as normal, like the dock, cursor and when scrolling in a webpage.
  4. All known issues by DisplayLink can be found here


My conclusion is that until now, there is no 100% functional product that it fully compatible with MacBook 2016 (with or without Touchbar), but I hope that DisplayLink improves there drivers soon.

Mar 28, 2017 12:40 PM in response to rcreff

Agreed, this is massively disappointing and frustrating. The "pro" in MacBook Pro seems to be becoming an ever diminishing distinction. Especially if this is, in fact, a software decision. There are tons of great and full-featured USB-C docks out there that support multiple display output - on Windows machines. Even on the MacBook running Boot Camp/Windows - so it's not even a hardware limitation. Someone decided to implement this specific functionality reduction in macOS, and it stinks.


For reference, I already own https://www.startech.com/Cards-Adapters/Laptop-docking-stations/usb-c-laptop-doc k~MST30C2DPPD and can say for certain that it only supports dual monitors when they are mirrored, when connected to my brand new Touch Bar MBP 13". Who exactly would ever want that?

Apr 23, 2017 12:18 PM in response to orangejon

Sorry, Orangejon, if my post was not helpful to you. I was responding to Rob's initial question, which was whether anybody had been able to use 1 usb c cable out of a new 2016 MacBook to drive two external displays (not mirrored but extended). As for disconnecting a bunch of cables, I only have to disconnect the one USB-C adapter from the MacBook to take it away for portable use. Thanks.

Jun 3, 2017 10:52 AM in response to kenmaryj

So if both of the monitors are plugged into the same usb-c port (one through the adapter, the other through the dock to the adapter) why couldn't you just use two of the ports on the dock? I already have two DVI monitors I'm trying to do this with, and a DVI to HDMI adapter, so couldn't I just use the HDMI and DVI ports on the dock and skip the adapter? Realizing I would need a USB to USB C cable to connect the dock to the computer directly. Let me know if I'm missing something. Trying to solve this with the shortest daisy chain possible. Thanks.

Jun 3, 2017 2:25 PM in response to computeruser17

Absolutely. Most people are talking about plugging into a dock that doesn't support DisplayLink technology.


The dock that I mentioned in my post does, and so I plug directly into it with a converter cable, and out of that dock via DVI to two separate 1080p monitors. This is my in office set up for work.


I use dongles at home instead.


One thing I will say is that DisplayLink has its quirks in the latest version of MacOS, this is on their site and they have confirmed it's due to Apple not coming to the table with them for the fix.

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Dual display over usb c on new MacBook 2016

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