119 votes

How do I control Macbook volume when a DP display is connected?

MonitorControl Control your external monitor brightness & volume on your Mac. It does not require installing a driver. Proxy Audio Device MacOS app that creates a virtual output device with ...
  • 1,291
50 votes
Accepted

How do I control Macbook volume when a DP display is connected?

It's because Apple computers don't support CEC (Consumer Electronics Control). Basically, macOS doesn't allow you to control end devices attached via HDMI or DisplayPort. Changing the volume would ...
  • 83k
46 votes

External display works on 30Hz

I had the same issue for a long time. At first, 60Hz worked. Then something happened and I'd only get 30Hz on my 4K Lenovo ThinkVision 27". I stumbled upon this article and simply went to Display ...
39 votes

My external monitor doesn't work at full resolution with my MacBook

You can go to System Preferences > Displays, then option-click (press option key while left-clicking) on Scaled to expose additional resolutions that aren't exposed with a normal left-click. ...
  • 4,555
29 votes

How do I control Macbook volume when a DP display is connected?

I did the 14 day trial of SoundControl which did work, but I wasn't really willing to pay $15 for something that I feel should be available out of the box for all MacOS machines. After some more ...
  • 391
20 votes
Accepted

MacBook [Pro] or iMac - how many displays, what resolution/frequency?

This may not be the only available resource on this topic, but it is a comprehensive & reliable one... EveryMac, as the name suggests, has information on every Mac model ever made [also iPhones, ...
  • 102k
19 votes

Connecting multiple screens to the 2016 MacBook Pro with Touch Bar

We have a brand new Late 2016 Macbook Pro and 2 Apple/LG 21.5 USB-C 4K monitors. Daisy-chaining/MST does not work. We are using the monitors and nothing else with the original cables. Only way to get ...
15 votes
Accepted

RMBP outputs 4k@60Hz ONLY when lid open

Solved! The solution is about as weird as the problem. To enable 60Hz in clamshell mode, I had to Option-click the "Scaled" radio button on System preferences' Display resolution screen, then the ...
15 votes
Accepted

How to use 2 FullHD monitors to one Type-C port on Macbook Pro 15 2018?

The Startech adapter you've got works as a MST (Multi-Stream Transport) hub. MST is a part of the DisplayPort 1.2 standard, which makes it possible for monitors and computers to support "daisy-...
  • 68.3k
13 votes

MBPr 2015, 2.5GHz i7 – Daisychaining 2 Dell U2414H 61 Screens

Apple does not support Display Port daisy chaining. Using Thunderbolt screens, this would work, and because the Apple screen is a Thunderbolt screen, that works. The fact that Windows supports DP ...
  • 1,104
12 votes
Accepted

MacBook Air occasionally freezes when external monitor is connected

More than likely, the issue is, in fact, your Mini DP to HDMI adapter. The AmazonBasics Mini DisplayPort to HDMI Adapter adapter that you listed is a passive adapter (notice nowhere do they say &...
  • 83k
11 votes

Can a MacBook Air support 2560x1600 output via HDMI using a Mini DisplayPort/Thunderbolt to HMDI adaptor?

I own a 2013 MacBook Air. This is equipped with a Thunderbolt 1 port : Mini-DisplayPort -> HDMI adapter (1920x1200 max.) Mini-DisplayPort -> DisplayPort adapter (upto 2560x1600 max.) I've ...
  • 210
11 votes

My external monitor doesn't work at full resolution with my MacBook

Okay, so I managed to work out what the issue was in the end - it was OS X's handling of the EDID data from the monitor. Windows evidently could read the data just fine, which is why it worked ...
  • 631
11 votes

MacBook [Pro] or iMac - how many displays, what resolution/frequency?

@Tetsujin answer includes very good third party options. But I often find direct information is better instead of going to a third party. So get information directly from Apple... Navigate to Apple'...
  • 9,419
10 votes

Connecting multiple screens to the 2016 MacBook Pro with Touch Bar

After doing a little research on Dell's daisy chaining monitors, I came across this bit of info on their support site: Multi-Stream Transport (MST), also known as Daisy Chaining, is a new ...
  • 83k
10 votes

Connecting multiple screens to the 2016 MacBook Pro with Touch Bar

I'm not sure if this answers the question but I'm testing this out right now with a new MacBook Pro Touchbar 13" with 4 USB-C ports. In the testing I'm using the Minix Neo C Hub which has 2x USB3 - ...
  • 123
10 votes

External display works on 30Hz

Try EasyRes app from the app store. One of my 4K monitors get 30Hz when I connect 2 4K monitors to my MacBook pro. The 2 monitors works fine together on Windows. Apple Support doesn't help. EasyRes ...
10 votes

How do I control Macbook volume when a DP display is connected?

I found two commercial apps which support this: SoundSource (just enable the "Super Volume Keys" feature in the preferences) SoundControl Both apps have a free trial. I've tried SoundSource and it ...
  • 1,364
9 votes

Apple Macbook Dual Monitor MST

As of 10.10.3 Apple does apparently support MST* on certain hardware: These Mac computers support multi-stream transport (MST) displays at 60 Hz: MacBook Pro (Retina, 15-inch, Late 2013) ...
  • 216
9 votes

Daisy chain of two Dell U2414H to Macbook Pro Retina 13''

Any Mac that supports DP 1.2 technically supports daisy chaining. However, OS X does not yet support it. If you boot Windows on your Mac you will be able to daisy chain.
9 votes
Accepted

Does USB-C to HDMI take more processing power than direct USB-C to DisplayPort?

Technically speaking, your Macbook has two Thunderbolt 3 ports. From Apple.com: Two Thunderbolt 3 (USB-C) ports with support for: Charging DisplayPort Thunderbolt (up to 40 Gbps) ...
  • 83k
8 votes
Accepted

El Capitan and Daisy Chaining

I have a 2015 15" running the El Capitan Gold Master and it still mirrors the displays. I wish they'd sort this out, I'm wasting a Thunderbolt port by having to connect both displays independently.
  • 129
8 votes

How to turn off an external display without disconnecting?

There are two solutions I can think of: SwitchResX Power plug adapter with remote control SwitchResX has a number of features including "disable display" which should deactivate it until the ...
  • 83k
7 votes
Accepted

Macbook Pro limits resolution of Samsung U28D590D to 1920x1080

I looked up the specs and that display supports 4K resolutions. 2011 model Macs do not support 4K displays. I understand that you're trying to run it at 2560x1440, which Apple specifically says that ...
7 votes
Accepted

Apple Macbook Dual Monitor MST

Unfortunately no, not at present (10.10.1). Firstly, your MBP needs to support MST which is part of DisplayPort 1.2 - you can check your laptop's specifications as they may vary depending on which ...
7 votes
Accepted

Best option for connecting MacBook Pro with USB-C to monitor with DisplayPort and HDMI?

I would go for USB-C to DisplayPort directly. That would be one relatively inexpensive ($20 to $40 US prices) cable to do the job. Since your display won't charge the MacBook and do video over a ...
  • 223k
7 votes

Dell WD15 Dock with 2017 MacBook Pro

This is a hardware limitation. I tested Dell WD 15 with my 2016 Macbook Pro 15. I used VGA and HDMI to connect my 2 monitors with Dell WD15 but Mac recognized both monitors as one. Later, I ...
  • 71
7 votes

Why is third monitor always mirroring one of my other two?

The problem with your setup does not have to do with the resolution, as others have hypothesized. The problem is that the dock you're using is not supported on macOS for a 3-display configuration. In ...
  • 68.3k
7 votes

What are the requirements to use iMac screen as a second monitor - Target Display Mode?

No. You cannot do this. The 2019 iMac is not supported for Target Display Mode. This is an attempt to write a canonical QA for this issue, as per the Meta post: Where is the list of canonical ...
  • 83k
6 votes

Apple Macbook Dual Monitor MST

This doesn’t seem to be supported on the new 2017 MacBook Pro (A1708) with two Thunderbolt 3 ports. However this is clearly not a hardware limitation since I am able to BootCamp into Windows where ...
  • 61

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