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

@picaron77 - This may be a long shot, but did you change the DP compatability to 1.2 (min. version required for daisy chain) in the monitors' menus? On my U2713H it's under Menu > Display Settings > DisplayPort 1.2 > Enable. Not sure if this will help but I thought it was worth mentioning.

It absolutely will not work. The current iteration of Thunderbolt supports DP1.1 (this is an Intel thing, not a Mac thing). Daisy chaining DisplayPort displays requires DP1.2. The next revision of Thunderbolt from Intel, which is slated to be released later this year with the Haswell chips, will support DP1.2 and 20Gb/s Thunderbolt speeds (as opposed to the 10Gb/s in the current generation). This is apparently a hardware difference, so it's not something that could be "retro-fitted" to existing Minis.

I have a mid 2010 MacBook Pro 15" i7 and two U2913WM. Extended the screen from MBP, but the issues is those two U2913WM are mirroring. I'm using the miniDP-DP cable that came with U2913WM. Cable connection is miniDP on MBP, DP-in on the 1st U2913WM. Then DP-out on 1st U2913WM to miniDP-in on 2nd U2913WM.

Result are the same with or without both U2913WM DP1.2 were set to enable or disable.

Below are some of the research that I did...

In this articule, it said "These Apple computers supply multichannel audio (up to 8 channels) and video signals over Mini DisplayPort", so does it mean it is DP1.2 ?

http://support.apple.com/kb/HT4241?viewlocale=en_US

Spec. of MBP

http://support.apple.com/kb/SP582

Dell's site said "support daisy chain functionality that allows extension or replication"

http://en.community.dell.com/dell-blogs/direct2dell/b/direct2dell/archive/2012/1 1/16/new-dell-ultrasharp-u2913wm-29-ultra-wide-monitor-seamlessly-blends-work-an d-play.aspx

If any futher findings can be posted will be highly appreciated.

Not sure if this helps or not, but I have almost the same setup and I can't get it to work either. I am trying to connect one Dell U2913WM from the mini DP port on the laptop to the DP port on the monitor, then from the DP OUT to a DP-to-DVI adapter to a 20" Cinema Display. No luck for me. The Dell monitor shows, but nothing is recognized through the DP out to the Cinema Display. I've tried enabling the 1.2 mode on the Dell but either way, nothing shows on the Cinema Display. Sad day.

I dont know if the cables that comes with it are 1.2 capable so I ordered the "Accell B143B-003J UltraAV Mini DisplayPort to DisplayPort 1.2". Also be sure to configure the settings on the monitor when you press menu > other settings > enable 1.2.

Ill post an update if it works with the accells.

@kevinks: How did it go?

I just got my new Haswell 2.6GHz Macbook Pro today and the first thing I did was try to daisy-chain my two U3014 displays with no success. Even with Thunderbolt 2 on the Macbook Pro and with "DisplayPort 1.2" enabled on both Dell monitors both monitors are mirrors of each other, with the Macbook Pro seeing them as a single display.

I find this odd because this Macbook Pro uses NVidia's GeForce GT 750M to connect via Thunderbolt and the 750M is DisplayPort 1.2 compatible.

There must be one last piece of the puzzle missing... whether that's a required firmware update or an OS update. As far as the hardware is concerned, these monitors should successfully daisy-chain.

Monger, I just tried with the same results.

I hooked up my brand new MBP (same graphics card) with TB2 ports to my crappy Dell U2713H montiors that are DP 1.2 compliant with no luck. Same outcome...mirror images of the displays.

Help anyone? Has anyone had success?

Add me to this as well. I have the latest rMBP 15 with Nvidia card, and 2 Dell U3014 chained via displayports. The two monitors are mirrored to each other.

Right now, I just hooked up the second monitor to my rMBP directly via HDMI so I can get true 3 monitors.

Has anyone tried daisy chaining the exact same monitors to a Windows machine? I don't have any PC with displayport..

Someone on this thread says that daisy-channing Dell displayports will only give mirror images. It has to be Apple's thunderbolts:

http://forums.macrumors.com/showthread.php?t=1661545#3

Monger, BigLou and Resno, since the new MacBook Pro has 2 thunderbolt ports, have you tried connecting each monitor to its own thunderbolt port on the MacBook Pro (instead of daisy chaining them off one thunderbolt port) ?

I would assume you would get a proper extended desktop (instead of mirroring) in this case...

,,,Paul

pauljb1, yes of course the two displays behave as expected (extended desktop, no mirroring) when using both MBP TB2 ports but then there are no TB2 ports left to use for anything else.

But wouldn't most other thunderbolt devices have two TB ports enabling you to daisy chain thru them per typical practice (displays at end of each chain)?! Granted, it means ensuring you only get other TB devices that have min 2 ports... Or am I missing something? ( and, yes, I totally agree that daisy chain on one of the ports would be ideal -Apple should have ensured compatibility with 1.2 daisy chaining sooner imho. Unless there's a tech block, seems they snoozed a bit re cutting edge.

Ironically, it was determined in another thread that if you had Win8 running, you could daisy chain 2 displays and extend your desktop via just one of the TB2 ports.

I was planning on buying a Dell u2413 so I could daisy chain a 2nd monitor until I read this. I have the Haswell MBP with the 750m. It's very annoying that this functionality doesn't work, surely it must be an OSX issue.

Any idea if this is something that Apple will be working on a fix for, or is it more likely that they won't because they don't make the u2413? Afterall, they don't stand to make a profit out of it?

I would guess (I'd put money on this) that, for whatever reason, they won't do a thing about it - which means I can add it to the list of other things that make me wonder why I spent over £2000 on a machine that doesn't have the performance or functionality of a windows laptop that costs less. Are Apple being lazy, purposefully unsupportive of other manufacturers, or just dumb?

It's hard to tell sometimes.