Q: Daisy chain two display port monitors (Dell U2913WM) to new Mac mini Thunderbolt?

So if you connect every U2414H to different thunderbolt port you will be able to extend your desktop to 3 displays ?

Just what Mac are you referring to?

zeair wrote:

 

So if you connect every U2414H to different thunderbolt port you will be able to extend your desktop to 3 displays ?

Macbook pro 13 late 2013

Yes. The specs for  that Mac includes:

• Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, both at millions of colors

MacBook Pro (Retina, 13-inch, Late 2013) - Technical Specifications

Hello guys

Greetings from Brazil

I have an early 2012 Macook air hooked to a Dell U2711 via Thunderbolt / Displayport. I want to add a second monitor, very likely Dell u2713hm.

I have read the whole thread and have not seen any comments in adding a thunderbolt dock thunderbolt like Belkin Thunderbolt Express (F4U055ww). Would that not work and even allow you to have USB 3 ports?

If the answer to above is a sound "NO", is there any MAC, besides the pricey Mac Pro, that would work for me? (I am fine with Mac Mini, Macbook pro too)

Cheers

I have a similar setup.  Mid 2014 MBP and two Dell U2414H monitors.

Both work if plugged in separatley, ie using both of the MBP's thunderbolt sockets.

I *can* get both monitors to *sort of* work using DisplayPort 1.2 MST - namely using only *one* Thunderbolt socket on the MBP.

The monitors ship with factory defaults set to DisplayPort 1.1a.  You need to first change the monitor's settings to DisplayPort 1.2

The User Manual here, Page 25 ftp://ftp.dell.com/Manuals/all-products/esuprt_display_projector/esuprt_Display/ dell-u2414h_User%27s%20Guide_en-us.pdf

Having done that, I have this setup:

MBP -> one MiniDisplayPort/Thunderbolt to DisplayPort cable -> First Dell U2414H monitor -> daisy chained via another cable to -> Second Dell U2414H monitor

BUT ... the two monitors show identical / mirrorer desktops.  To be clear, I have UNchecked the "mirror displays" in the Mac's System Preferences.  And the MBP screen has a different desktop to the monitors.  But the two monitors display the same, mirrored display as each other.

Put another way, I have three physical screens (MBP & 2 x Dell U2414H Monitors) and 2 distinct desktops (the MBP has one, the two Dell monitors have a mirrored 2nd desktop).

Which is close ... but still rather useless.

How do I get the two Dell monitors to each have their own desktop?

>>How do I get the two Dell monitors to each have their own desktop?<<

You plug each into a separate Thunderbolt port. OS X doesn't support pass-through DisplayPort. When you get both displays showing the same image, it's not "almost" working - you're just splitting a single display signal (which is all Thunderbolt will give you in OS X) to two screens.

Happy almost 2nd anniversary to this thread, BTW.

@seanfranklin Thanks for the reply & explanation.  Boo OS X

Not that it helps, but for anyone else poking around -- the other thing I had to do with the Dell U2414H monitors (using the supplied cables) is use the monitor's menu to adjust the input (on the 2nd monitor) from DisplayPort to Mini-DisplayPort.  It doesn't appear to be clever enough to auto-detect which you have plugged in.

Mac Thunderbolt -> DisplayPort input on Monitor#1 -> DisplayPort output on Monitor#1 -> MiniDisplayPort input on Monitor#2

It's all covered in the user manual ftp://ftp.dell.com/Manuals/all-products/esuprt_display_projector/esuprt_Display/ dell-u2414h_User%27s%20Guide_en-us.pdf

Is anyboudy from Apple can say something ............

I am in the same position guys two large dell monitors, but I cannot daisy chain without mirroring.

Has anyone been able to confirm that two apple monitors daisy chained will allow the extended desktop?

Two daisy-chained Apple Thunderbolt monitor do allow extended displays. That is because a Thunderbolt is different than a mini displayport.

Thunderbolt ports and displays: Frequently asked questions (FAQ) - Apple Support

2. How do I connect my Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to my Thunderbolt-equipped Mac when I have other Thunderbolt devices connected?

When connecting a Mini DisplayPort display or a display using a Mini DisplayPort adapter to a Thunderbolt peripheral (except as described in question 24), make sure the display is connected at the end of the Thunderbolt chain. You can use only one Mini DisplayPort device in the Thunderbolt chain.

The problem is that port we use is not "real" Displayport, rather displayport adapter.

It looks thesame but it is not.

Regards.

JK.

It shouldn't matter - the fact that it works on Windows means that this is simply a driver issue, not a hardware one.

Agree it seems to be a driver issue.  One thing I'll point out is that Apple has not updated their fancy Thunderbolt Display in 4 years which makes it even more frustrating that they wont update this driver.  I'm not a developer but I wonder if this type of issue could be solved with a 3rd party app As Mac OS X is open source.  I would pay $10 for a driver/app just to unlock this feature and would conspider paying more if someone wrote an app that had other functionally.

If anyone at Apple is listening it would be nice to get some insight or confirmation on the status of support for Daisy chaining via DisplayPort 1.2 with 3rd party Hardware.

Alternatively, it would be great to get soone from the display port alliance to weigh in on this thread as a previous user made an interesting point that Apple's current implementation of Display port (on the latest release of Mac OS X 10.10 and brand new Mat Book Pro Hardware) is not a full implementation of the technical specifications.

I would also love to seem some response from Apple about this issue. I'm trying to make a list about all the posts created around this issue here: MST Support but no support for daisy chaining?

It's a lot, but seems not enough to get Apple's attention.