Apple Macbook Dual Monitor MST
Я собирался купить два монитора для моего MacBook середины 2012 года без Retina. Мне очень понравился внешний вид Dell UltraSharp 24 (U2414H)
По словам Dell, монитор поддерживает MST для порта дисплея.
Поддерживает ли мой MacBook эту многопотоковую технологию?
К сожалению, нет, не в настоящее время (10.10.1).
Во-первых, ваш MBP должен поддерживать MST, который является частью DisplayPort 1.2 — вы можете проверить характеристики вашего ноутбука, поскольку они могут различаться в зависимости от того, какой вариант графического процессора вы использовали при покупке вашего MBP.
Во-вторых, даже если ваше оборудование поддерживает его (многие недавние MBP поддерживают), Apple еще не добавила поддержку OS X для этой функции. Пользователи, которым нужен MST на MBP, использовали bootcamp для загрузки с Windows, которая прекрасно поддерживает MST на том же оборудовании.
Обновление (10-08-2015): Казалось бы (благодаря ссылкам ниже), что поддержка MST была добавлена в 10.10.3. Ура!
По состоянию на 10.10.3 Apple, по-видимому, поддерживает MST * на определенном оборудовании:
Эти компьютеры Mac поддерживают многопотоковые транспортные дисплеи (MST) с частотой 60 Гц:
- MacBook Pro (Retina, 15-дюймовый, конец 2013 г.) и позже,
- MacBook Pro (Retina, 13-дюймовый, начало 2015 года) и позже,
- Mac Pro (конец 2013 г.),
- iMac (Retina 5K, 27 дюймов, конец 2014 г.) и позже
* К сожалению, он, по-видимому, ограничен дисплеем MST, который использует несколько потоков, таких как дисплеи MST 4K, упомянутые далее на странице поддержки Apple, а не MST для объединения нескольких дисплеев DP1.2, поскольку я не смог найти любая информация об этом возможна.
Из моего собственного тестирования с новым MacBook Pro 2016 13 «с двумя портами молнии, кабелем StarTech DP 1.2 USB Type-C к DisplayPort, двумя Dell U2414H и стандартным кабелем DisplayPort к DisplayPort, к которому подключается, дисплей на конце цепочка просто отражает другой дисплей. Это с включенным DisplayPort 1.2 в настройках на обоих дисплеях.
Кажется, это подтверждает, что последовательное подключение MST DisplayPort на OSX 10.12.2 в линейке MacBook Pro 2016 года не поддерживается, и в ближайшее время его поддержка не будет поддерживаться.
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Question: Q: MST Support for MacBook Pro Retina Late 2013 — DisplayPort 1.2 — Will it ever happen? (with sources)
So back in October, I purchased a brand new Macbook Pro Retina (MBPr), fully loaded with top of the line specs. I was soooo excited to have Thunderbolt 2 tech which Intel AND Apple describes as having DisplayPort 1.2a compatibility — which up to this point is unfortunately NOT the case. The point of the information/questions and requests in this article is to engage a conversation about the issues of not having MST support after Apple falsely mislead their consumers to think otherwise — especially when it is clear the MBPr is capable. Please read on.
Apple advertises that the Thunderbolt 2 ports on BOTH the MBPr and the new Mac Pro (NMP) will have 4K Display support with the famed 20gb/sec Ports (DisplayPort 1.2 only requires a little above 17gb/sec). Now that the 10.9.1 update has been released, we have failed to see MST or Multi-Stream Transport enabled on the MBPr Late 2013. Now, as for the New Mac Pro- it DOES have MST enabled in 10.9.1 with the AMD GPUs. For all of you out there that’s questioning what this means, short answer is basically the Mac Pro will be able to power a 4K Monitor at 60Hz through the Thunderbolt 2 Port but the New MBPr is stuck with only HDMI 1.4 support which tops out at 4K 30Hz. 30Hz is unacceptable for anything but movies or a photo slideshow. At 30Hz the cursor will jump across the screen, eliminating any of the benefits of 4K.
BUT it gets worse.
Apple can be seen advertising that the new MBPr 15″ model can power a 4K monitor THROUGH the Thunderbolt 2 Port here: http://www.apple.com/thunderbolt — This article quotes the following:
«Now with Thunderbolt 2 built into the new Mac Pro and MacBook Pro with Retina display, you can connect the latest 4K desktop displays and get double the bandwidth for your peripherals. And the two generations of Thunderbolt technology are compatible with each other.»
Does this not let the consumer assume that the newest MBPr will be able to drive a 4K display through the Thunderbolt 2 Port? I would say yes it does, but at the time I wrote this, the TB2 Ports can’t power a 4K display because, as previously stated, MST is disabled in Mavericks for the 15″ MBPr Late 2013.
NOW, later on Apple posted the following article on 4K support here: http://support.apple.com/kb/HT6008
4K support on the MacBook Pro (Retina, Late 2013)
MacBook Pro supports 4K displays and Ultra HD TVs at the following resolutions and refresh rates with the built-in HDMI port:
- 3840 x 2160 at 30 Hz refresh rate
- 4096 x 2160 at 24 Hz refresh rate (mirroring is not supported at this resolution)
In the article above the New Mac Pro is listed as having support for a 4K Display with the Thunderbolt 2 Port (or MST DisplayPort 1.2a Technology) at 60Hz with no problem. This leads myself and many others to believe that MST will NEVER be enabled on the newest MacBook Pro Retina with Nvidia GPUs. Yes, 4K IS supported but ONLY through the HDMI 1.4 port, which has the limitation of only 30hz. This two-faced advertising is extremely upsetting to a LOT of people, including myself.
Interestingly enough, THIS IS NOT a hardware issue. If one ventures into Windows 8.1 via Bootcamp and connects a 4K Display via the Thunderbolt 2 (or through DP1.2) Port, the Display registers at 60Hz, thus proving that the Thundberbolt 2 Hub Controller is completely capable of MST DisplayPort functionality. Clearly this a driver issue with Apple, Nvidia or Intel or any combination. What Apple has done here is forcing any professional that desires stable and clear 4K technology through their MacBook Pro Retina to do so only using Windows 8.1 on their own machines! Definitely an oxymoron if you ask me.
Later on when the Mac Pro was ready for ordering, Apple placed the Sharp PN-K321 as a compatible option for a 4K Display. On the Store page featuring the (over three thousand dollar) Sharp 4K display, located here http://store.apple.com/us/product/HD971LL/A/sharp-32-pn-k321-4k-ultra-hd-led-mon itor?fnode=53 Apple states the following:
«Note that 4K DisplayPort operation is only compatible with the new Mac Pro (Late 2013).»
All of that being said, and I’m terribly sorry for my wordy ranting.
This brings me to a final two requests to ANYONE reading this post:
a) Has anyone working with the new 10.9.2 Beta Update seen evidence that DisplayPort 1.2 capabilities will be enabled for the new MacBook Pro Retina (Nvidia 750M) with the promised «Graphics Driver Updates» within the next Mavericks update?
b) To others that purchased or were/are thinking of purchasing a new MacBook Pro Retina with TB2 Ports: If you are just as upset as me about this crushing blow to consumers that just purchased a $3,000 laptop that were promised something that wasn’t delivered — I urge you please, write to Apple and let them know they are making a mistake. You can do this though the support page or through http://www.apple.com/feedback
Thank you for your precious time, and if anyone has anything to contribute to this issue, please jump in.
MacBook Pro (Retina, 15-inch, Late 2013), OS X Mavericks (10.9.1), Maxed Out — 2.6Ghz Quad Intel
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Everything you need to know about MacBook Pros and (their lack of) DisplayPort MST (Multi-Stream) support
Nov 21, 2018 · 7 min read
Need a tl;dr? Scroll to the bottom.
Update, June 6, 2021: Apple has released Macs based on entirely new silicon, the M1 chip, and yet, these new M1-based Macs have even more restrictions on what their Thunderbolt ports can do than their Intel-based equivalents, even in Thunderbolt mode. If you’re a Mac user, my best advice to you is to switch to something else.
A h, the MacBook Pro — once upon a ti m e, the no-brainer, painfully obvious choice for a professional, and for good reason. Today, however, I was reminded why I gave up on Apple, macOS, and their entire ethos, and why macOS has no proper place in a corporate environment .
First, a disclaimer. I owned one, once. The MacBook Pro (Retina, 15-inch, Late 2013), as Apple calls it. I paid $2,099 three days before Thanksgiving 2014 to PowerMax (RIP) for this beast:
My precious looked like this:
Who could fault that gorgeous Retina display, 15.4 diagonal inches of pure PPI bliss? Not me. In fact, that was a key selling point. As were the sweet, sweet Thunderbolt 2 ports, with which you could daisy chain an insane number of peripherals!
An impressive feat of design, to be sure. And daisy chaining hard drives and mice and other peripherals through your TB2 monitor did work! But, there was one problem — two, actually, both of which users noticed very quickly, because Apple was being less than forthright about the capabilities of its new Retina machines, and folks were pissed that OS X wasn’t delivering on at least two points:
- OS X didn’t support 4K@60Hz for DisplayPort MST monitors, whereas Windows users had been enjoying this functionality for some time,
- And OS X definitely didn’t support multiple monitors in a DisplayPort daisy chain… again, even though this was ubiquitous among Windows machines, and the new Retina MBPs were supposed to have this feature because they (still) advertise DisplayPort 1.2 support.
Reports of these problems are spread all over the Internet, but I’d like to focus on one thread in particular:
T he very first 4K panels employed MST as a technical necessity and used MST to combine multiple smaller panels into a single 4K image. At the time, I didn’t notice this problem because I was late to the 4K party, and my first 4K monitors were single-stream (SST) monitors without daisy-chaining (in other words, each monitor had its own DisplayPort cable connected directly to a TB2 port on the MBP).
But if you adopted 4K early, and you were using a Mac, you very well would have been stuck at 4K@30Hz , if OS X recognized your MST monitor at all. And there was a twist! Folks running Windows 7 and 8 in Boot Camp on the same Macs were able to run the same MST monitors in 4K@60Hz without issue. In other words, Apple’s hardware supported MST, but their software did not.
After just over two years of dealing with various other “OS X can’t do that” problems and wading through forum threads full of Mac fans/pedants spewing “why would you even want to do [ totally reasonable thing like disable mouse acceleration] anyway, that’s not the right way to use a Mac,” the straw that broke the camel’s back was learning it couldn’t run Civ 6 without burning my lap. I sold my MBP to an ex, replaced it with a Dell XPS 15, and moved on with my life.
That is, until today.
Today at work I plugged in a fancy HP Thunderbolt 3 G2 dock (which I love because it’s one of the few that sports two full-size DisplayPorts, AND it comes in a 230W version if you need it) to the Thunderbolt 3-equipped MacBook Pro I purchased for my newest sysadmin at his personal request. And sure enough, the two monitors connected to the DisplayPorts lit up. Except they appeared as a single monitor in macOS. Wait…
This has to be a mistake, I thought. This is basically brand new hardware on the latest and greatest peripheral bus out there. Isn’t there an option to disable mirroring? No, only the first monitor appears in System Preferences, there’s no second monitor appearing at all. Is there a driver out there that I need to install? No, Apple doesn’t allow third-party dock drivers nor do they allow third-party GPU drivers that might fix the problem. Is there a problem with the cables? No, a Windows PC connected to the same dock shows both monitors. Do I need to upgrade to macOS Mojave? No, upgrading to Mojave makes no difference (although I dig the new dark mode). ( June 2021 edit: Big Sur doesn’t fix this either. Sorry.) OK, so I’m limited to mirroring on macOS, and it’s a problem with macOS…
I was (and am still) truly at a loss. For context, both of the dock’s DisplayPorts work without issue on the following laptop models:
- Dell XPS 15 9550, 9560, 9570, 9575
- HP ZBook 14u & 15u G5, ZBook Studio 15 G5, EliteBook 840 G5
All of which, by the way, are svelte laptops in their own right, absolutely competitive with Apple from a build-quality perspective. Hmm…
Well then, time to fire up Google. First I found a thread that explained that the HP dock in question uses MST for the two DisplayPorts. Uh oh. Armed with that knowledge, I stumbled upon our old friend:
The comments on the thread were many, and also reveal problem 2 described above:
Poor David Erickson. So innocent. So hopeful. Little did David know, the typical Mac devoté on these forums is about as tolerant of Apple criticism as a bag of starving crazed weasels. The first response he receives is this tidy little bag of dogshit from “a brody”:
Ahem, a brody, daisy-chaining DisplayPort has been A Thing™ since it was introduced in 2010 (wiki), FOUR YEARS BEFORE YOU POSTED YOUR LIL NASTYGRAM AND MORE THAN EIGHT YEARS AGO TODAY, YOU UNHELPFUL PEDANT. And why does this matter? Because if you’re docking the laptop, you want to be able to connect everything using a single cable. Connectivity over a single cable is the futuristic promise of Thunderbolt 2 and 3 — it’s the dream, man! — a promise that Apple has (still!) roundly failed to honor.
It’s almost 2019, folks. We are about to colonise Mars and macOS still doesn’t support DisplayPort daisy-chaining.
T he most incredible part is, they seem to have nothing to gain from this intentional lack of support. For Apple, the effort to fix this would amount to a minor edit to the Apple graphics driver kext, bundled in a minor macOS update some users wouldn’t even notice. As trivial as it would be, time has shown again and again that Apple has no excuse for not fixing this — they just don’t care. Meanwhile, all the other major laptop manufacturers have got this right. They support it out of the box, no frills, no fuss. If you’re looking for single-cable Thunderbolt 3 docking, Windows laptops just work. And that’s one more reason why I can’t credibly deploy Apple laptops in a corporate environment. They just don’t work.
Okay, rant over. I leave you with this other poor soul, posting, forlorn, from his iPhone:
- Apple macOS does not support DisplayPort daisy-chaining, also known as multi-stream, or MST, on any of their computers, from MacBooks to MacBook Pros to iMac Pros to Mac Pros, even if they sport Thunderbolt 3.
- It doesn’t matter what macOS you have, it doesn’t even work in Big Sur.
- Apple continues to advertise DisplayPort 1.2+ support across their product lines, even though they have not implemented MST daisy-chaining, a key feature of the DisplayPort 1.2 spec.
- There is no way to “make it work” on Apple hardware except to run Windows via Boot Camp. If you want to use macOS with a dock that uses MST for multiple DP outputs, or if you want to daisy-chain another monitor from your first, you’re SOL. And Apple doesn’t care.
John M. Kuchta
Information infrastructure evangelist // WiFi engineer // Film nerd
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