Dell WD19 Dock with Mac

tmanto02

macrumors 65816
Original poster
Jun 5, 2011
1,148
333
Australia
My employer uses Dell computers but I prefer to BYO Macbook pro. The docking station is a Dell WD19 with USB C connectivity. It has Display port and HDMI inputs for dual screens. All of the ports seem to work with my mac, except when trying to connect the two dell monitors it duplicates rather than extending across the two monitors.

Are there any drivers or anything that I can do to make the dock fully functional with my mac?
 

Crombie914

macrumors newbie
Jul 24, 2002
27
0
Ohio
I don’t have experience with the wd19, but we deploy wd15 units and we have this same behavior. I remember reading somewhere that it has something to do with USB C display tech that Dell uses in those. If it was a thunderbolt dock, from what I have read, it works perfectly.
 

TitanBax

macrumors newbie
Jun 15, 2019
1
0
I don’t have experience with the wd19, but we deploy wd15 units and we have this same behavior. I remember reading somewhere that it has something to do with USB C display tech that Dell uses in those. If it was a thunderbolt dock, from what I have read, it works perfectly.
Has anyone resolved this. I have the same problem. It works fine with the Dell Workstations we have, but mirrors on the MAC. We also have D6000 in another region and they work fine, but we have gone to the WD19 as it supports the additional power required.

Cheers

Titan
 

tmanto02

macrumors 65816
Original poster
Jun 5, 2011
1,148
333
Australia
Has anyone resolved this. I have the same problem. It works fine with the Dell Workstations we have, but mirrors on the MAC. We also have D6000 in another region and they work fine, but we have gone to the WD19 as it supports the additional power required.

Cheers

Titan
I concluded that it doesn't dual screen with Mac, plug in my second monitor with a diplayport to usb c cord
 

Stephen.R

macrumors 68030
Nov 2, 2018
2,554
2,989
Thailand
Can someone confirm which model WD19's you're using? There are three variants apparently:

WD19 (USB-C host connection, max 4k@30Hz video)
WD19DC ("Separable Dual DisplayPort over USB-C", max 5k@60Hz) - this, it seems means two USB-C cables from the dock to the host machine
WD19TB (TB3 host connection, max 5K@60Hz video)

Also, what displays are you trying to use it with, at what resolution? Do the PCs where "it works" have exactly the same dock+display combo?
 

Eitel

macrumors regular
Sep 20, 2012
113
16
You can only get one monitor over USB-C. In order to get both monitors, you need to use Thunderbolt.

The WD19 dock work with Windows, because Windows supports MST (Multi-Stream Transport), and OSX doesn't.
 

Lammers

macrumors regular
Oct 30, 2013
231
155
I have the Thunderbolt version of this dock (WD19TB) and it still doesn’t drive two monitors properly - the Mac still sees one display that the dock mirrors across both.
 

Stephen.R

macrumors 68030
Nov 2, 2018
2,554
2,989
Thailand
I have the Thunderbolt version of this dock (WD19TB) and it still doesn’t drive two monitors properly - the Mac still sees one display that the dock mirrors across both.
Wow that's crappy. I guess it's still using DP MST to save bandwidth for the rest of the dock.
 

nihil38

macrumors newbie
Dec 10, 2019
1
0
I got this to work using the Dell WD19TB and a 2017 MacBook Pro MacOS 10.14.6. Two external monitors, one Thunderbolt 3 cable. The hub connects to two screens using a display port and thunderbolt to HDMI adapter, with the adapter connected to the Thunderbolt port (not the UCB-C port). It would not work using any other combination, e.g. HDMI & Display Port. This is the only config that did not mirror the two displays. I have the DisplayLink drivers installed.
 

testuser1234Dock

macrumors newbie
Dec 19, 2019
1
0
I got this to work using the Dell WD19TB and a 2017 MacBook Pro MacOS 10.14.6. Two external monitors, one Thunderbolt 3 cable. The hub connects to two screens using a display port and thunderbolt to HDMI adapter, with the adapter connected to the Thunderbolt port (not the UCB-C port). It would not work using any other combination, e.g. HDMI & Display Port. This is the only config that did not mirror the two displays. I have the DisplayLink drivers installed.
I just wanted to echo this reply and state that this is my exact experience except I do not have the DisplayLink drivers installed.

Hardware: 2019 15in MBP
OS: Catalina 10.15.2
Dock: Dell WD19TB with 240w power adapter
Monitors: 2x Dell P2417h

Initially ran HDMI and DP to the dock and experienced the "single" monitor mirrored across both. I could open the lid and get the native screen and also this mirrored experience in addition to it. Now, I don't have a USB-C-to-HDMI cable, but I do happen to have a Dell DA300 which we received as a test unit. I moved the HDMI to that and hooked up the USB-C cable from the adapter to the Thunderbolt port, and now I've got the full dual-monitor experience. I've placed an order with my procurement group for some USB-C-to-HDMI cables for testing a direct connection and if that works I'll have a viable dock for my Mac users.

Thanks for all the previous replies and I hope this helps any future lost souls googling this issue.
 

mattimac

macrumors newbie
Feb 11, 2020
1
0
Hey guys,
i registered here just to confirm that:
- DELL-WD19-130W seems not to work with two but one DP display with mac
HOWEVER
- two DP display work flawlessly on Dell Latitude 5400 over this single USB-C so maybe there is some theoretical way it may work with Mac?
 

RC_M

macrumors newbie
Mar 2, 2020
1
0
I have a number of Dell WD19tb docks, I can not get them to work with our MacBook Pros. I have tried installing Displaying USB Graphic driver v 5.2.1 and DisplayLink macOS App beta Driver 10.15 and have the same issue; The Mac sees the two monitors as one display and duplicates the display to both monitors. Has anyone found a solution yet?
 

snomlover

macrumors newbie
Mar 30, 2020
1
0
I have a number of Dell WD19tb docks, I can not get them to work with our MacBook Pros. I have tried installing Displaying USB Graphic driver v 5.2.1 and DisplayLink macOS App beta Driver 10.15 and have the same issue; The Mac sees the two monitors as one display and duplicates the display to both monitors. Has anyone found a solution yet?
It seems that the WD19TB dock internally is using a DisplayPort (DP) MST (MultiStreamTransport)-Link to virtually daisy chain multiple DisplayPort monitors that are connected to the hub. The problem is that Windows natively supports DP-MST but MacOS doesn't. It doesn't matter if you've DisplayLink drivers installed on the Mac or not.

The solution is to plug a regular USB-C-Hub (non Thunderbolt) with built-in display ports (e.g. the DELL DA-300) to the WD19TB's Thunderbolt 3-output port to address a 3rd display.
 

Hogne Vevle

macrumors newbie
Apr 16, 2020
1
0
So, initially I got dual displays working fine with my MacBook Pro and WD19TB, with a USB-C-Hub connected to the WD19TBs Thunderbolt port as described above.

But get this - a few days later, it has stopped working... Only one display is being detected on the MacBook Pro (the one connected directly to the dock). If I plug both displays directly into the WD19TB, they are mirrored like before, so I know both displays are working fine. I even tried replacing the USB-C-Hub with a brand new (identical) one.

Everything also works fine when I connect my Windows laptop (Dell XPS 15), so it seems something's wrong on the MacBook side.

I've also tried rebooting the Mac, and reconnecting the power to the WD19TB.

Any ideas?

EDIT: Dual displays work again if I connect the USB-C-hub directly to the second USB-C port on my MacBook Pro (i.e. not through the dock)

EDIT2: By dual displays I mean two external displays (in addition to the MBP built-in display)
 
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stellamarie

macrumors newbie
Jul 17, 2020
1
0
So.. this is a little delayed but I figured out a solution.

The Dell WD19 dock. you leave one of the display ports in the dock, connect the DOCK USB-C to the macbook second port.
In the first port you use the dongle (the one that has USB/HDMI/USB-C) -- you directly connect the other monitor to the hdmi on the dongle. All 3 displays work!
 

Daventry

macrumors member
Sep 23, 2011
75
36
Hi,

Does anyone have a Dell WD19TB docking station and use it with two 4k monitors at 60Hz?

My issue is that when I restart or wake my MBP, one of the monitors drops to 30Hz - Mac OS won't let me change its refresh rate.

The only workaround I've got is to connect both monitors to the MBP directly, ensure they're running at 60Hz and then connect them back to the WD19TB.

BTW I'm using a Thunderbolt 3 -> DP cable for both monitors and have upgraded the WD19TB firmware to its latest version.

Thanks in advance.

EDIT: Have just tried another MBP with Mojave and BootCamp - works on both cases. After restarting both monitors keep running at 4k 60Hz. Seems like an issue with Catalina 10.5.5
 
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