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141 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 ...
Surmon's user avatar
  • 1,511
58 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 ...
Allan's user avatar
  • 103k
49 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 ...
Mikko Mattila's user avatar
32 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 ...
Aaronias's user avatar
  • 421
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, ...
Tetsujin's user avatar
  • 117k
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 ...
user2209274's user avatar
18 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 ...
Huakun Shen's user avatar
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-...
jksoegaard's user avatar
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13 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 &...
Allan's user avatar
  • 103k
12 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 ...
Scott Dudley's user avatar
  • 1,434
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'...
user7886229's user avatar
  • 10.1k
11 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 ...
Allan's user avatar
  • 103k
10 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) ...
Josh Doug's user avatar
  • 226
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 ...
Allan's user avatar
  • 103k
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 - ...
JoshFink's user avatar
  • 123
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) ...
Allan's user avatar
  • 103k
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 ...
Allan's user avatar
  • 103k
8 votes

External display not recognized after waking from sleep until restarted

I still have the same issue on a macbook pro 15' 2018. Unplugging and plugging again the screens helps without having to restart the whole thing... except that all open windows jump to the main screen....
quasi's user avatar
  • 181
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 ...
bmike's user avatar
  • 238k
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 ...
Him's user avatar
  • 71
7 votes

External display works on 30Hz

I'm here to offer a different solution. I have a MacBook Pro 15(2018) connecting with LG Ul500 27'4k monitor. I met the same issue that the external monitor worked on 60hz at the beginning but changed ...
luke_lew's user avatar
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 ...
jksoegaard's user avatar
  • 78.5k
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 ...
Mark's user avatar
  • 61
6 votes

Dell WD15 Dock with 2017 MacBook Pro

Allright, just confirmed that this product is not fully compatible with a MacBook. The dock doesn't communicate powerinfo with the Macbook so doesn't supply it with enough power. (Charging takes more ...
Milkmannetje's user avatar
6 votes

2018 MacBook Pro + Dell U2718Q, single cable for display and USB data

No. Technically speaking, you have a Thunderbolt 3 Type C port. "C" is the physical charastic of the port, not the USB specification. Being that it's Thunderbolt 3, its carrying several signals: ...
Allan's user avatar
  • 103k
5 votes

Adjusting brightness on 27" iMac used as external DisplayPort monitor for PC

I just had an issue with not being able to change the brightness on my 27inch iMac in Target Display Mode. It was at full brightness. And the brightness keys on the keyboard hooked up to the TDM Mac ...
OwlBoy's user avatar
  • 53
5 votes

HDMI/Displayport audio control for OS X

I'd recommend MonitorControl: MonitorControl allows you to control your external monitor brightness, contrast or volume directly from a menulet or with keyboard native keys. MonitorControl is ...
Daniel Chaparro Design's user avatar
5 votes

How to turn off an external display without disconnecting?

While not the best option for the op having to physically disable the display I think that is the best option. I was able to get a Geeni multiplug that I can enable each monitor individually through ...
Jose Bibiloni's user avatar
5 votes
Accepted

Can I use Apple's Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter for Target Display Mode on an iMac?

Yes, I'm successfully running a setup with a 2017 13" MacBook Pro and a 2011 iMac. The original Apple USB-C to Thunderbolt 2 Adapter works fine for Target Display Mode.
Martin's user avatar
  • 76
5 votes

External monitor has blurry font on a MBP retina

The MacBook Pro (Retina, 13-inch, Late 2013) has an Intel Iris 5100 GPU and is capable of supporting an HDMI-compatible device, including 4K, while using one Thunderbolt display or it can support two ...
Monomeeth's user avatar
  • 64.7k

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