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51 votes

2018 MacBook Pro + LG 4k display = no 60hz

On my Philips 328P6V monitor, using a USB-C to DisplayPort cable with my MacBook Pro (15 inch model from 2019 with Radeon Pro 560X), I first was stuck at 4k@30Hz and couldn't get 4k@60Hz (even though ...
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20 votes

2018 MacBook Pro + LG 4k display = no 60hz

I had the same issue on my MacBook Pro 16". You need to option+click on scaled in display settings and then select 4k resolution. Then tick the box that says "show low resolution modes&...
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  • 201
13 votes

Can I do 4K@60hz with my early 2015 MacBook Pro Retina?

I have a similar device (Early 2015 rMBP with 16 GB running macOS Sierra 10.12.6) and can confirm that it will power an external 4K display at 60 Hz - it's supposed to power two external displays at ...
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  • 131
8 votes
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MacBook 4K/60Hz adapter is working directly, but not via USB-C hub

The reason that when you plug in your (known to be good/working) USB-C to HDMI video adapters into USB-C hubs is because the USB-C hubs don't pass the video signal that originates from the MacBook ...
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  • 81.7k
7 votes

4K Monitor and performance issues with MBP Late 2015

Scaling is your culprit. Anything different than 1080p or 4K is going to tax the GPU and cause lag. It's unfortunate. I think a solution which costs a lot more money would be to purchase a 5K monitor ...
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  • 111
7 votes
Accepted

Does the "Larger text" VS "More space" trade-off in Display preference affect the 4K resolution of an external monitor?

First, a history lesson. The very first Apple computers had displays with 72 pixels per inch. This is the same size as 1 point (a unit of 1/72 inches), so 1 point = 1 pixel. Text at 12pt would display ...
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  • 23.2k
6 votes
Accepted

2018 MacBook Pro + LG 4k display = no 60hz

So I've tried a few things: IOKit/CoreDisplay patch described in this article. But the patch doesn't cover AMD graphics card and is not compatible with the CodeDisplay version I have Randomly re-...
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5 votes

Can I do 4K@60hz with my early 2015 MacBook Pro Retina?

Can I do 4K@60hz with my early 2015 MacBook Pro Retina? It's possible but not exactly fun. I'm using a Sony 43" 4k TV with HDMI 2.0 right now. For some reason the MBP insists it can only run it at ...
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  • 151
4 votes

Will Docking Station make Early 2013 MacBook Pro faster

Would using a docking station keep it cooler and make it appreciably faster? No, a docking station has no "compute" power built into it so it can't offload any processing of any kind from the CPU ...
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  • 81.7k
4 votes

External GPU allow a late 2014 mac mini run 4k at 60Hz?

In theory, yes - an eGPU could allow you to run a 4k display at 60 Hz. It depends on the specific eGPU (i.e. which graphics card is actually plugged into the breakout box). The CPU in your Mac Mini ...
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  • 66.1k
4 votes
Accepted

Cannot get 60 Hz on MBPr 13" 2018

The problem is your Dell DA300 adapter (I assume you mean this one, as the DA301 does not exist). This adapter requires DisplayPort 1.3/1.4 in order to drive 4k at 60 Hz, otherwise it drops down to 30 ...
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  • 66.1k
4 votes
Accepted

Will an external 4K monitor cause performance issues on my MacBook Pro?

I am using a Macbook pro 13 2015 with a 4K 27 inch display, and definitely having performance issues when I use it in one of the scaled resolutions (e.g., 2560x1440, 2304x1296, 3008x1692..). When used ...
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3 votes
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How do I connect a 3rd 4K monitor to my 2013 Mac Pro?

The main article on 4k displays links to the below article on Mac Pro: https://support.apple.com/en-us/HT206587 https://support.apple.com/en-us/HT202801 The trick for the third display on Mac Pro is ...
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  • 219k
3 votes

2017 MacBook Pro can't connect to Dell P2715Q via USB-C to DisplayPort cable

I used the Star Tech USB to DisplayPort Cable to a similar model monitor, and it worked. On 1 monitor I had to manually change the DP version.
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  • 31
3 votes

Can the Mac Mini Support a 4K Monitor?

I can confirm 100% that you CAN in fact get 3840x2160 @30Hz 4K from a Late 2012 mini running 10.10.5 using only one MDP to DP cable. I'm writing this using a 2012 Mac mini (Intel HD4000 internal ...
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3 votes
Accepted

How many external HD (not 4K or 5K) displays can I use with the 2016 13" MacBook Pro with Touchbar?

Officially it will support one display at 5120 x 2880 pixels at 60 Hz or up to two displays at 4096 x 2304 pixels at 60 Hz. Of course, this is the 5K and 4K you're probably already aware of. However, ...
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  • 62k
3 votes
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Can the new 2016 MacBook Pro 13" without Touch Bar drive a 4K display?

From the Video Support section of the Tech Specs for the 2016 13" MacBook Pro: Simultaneously supports full native resolution on the built-in display at millions of colors and: One display ...
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  • 53.6k
3 votes
Accepted

Can I get stable 4K 60Hz with two external displays without MBP screen on? What about performance with MBP15 mid-2015DG

Can I get stable 4K 60Hz with two external displays without MBP screen on? Your internal screen of your MBP being on/off doesn't factor into whether the MBP can support 2 external 4K displays ...
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  • 81.7k
3 votes
Accepted

Apple TV zoom/stretch (Netflix app)

Double-tap + Swipe Quote from this Reddit thread (emphasis mine): I've been running into this accidentally and thought it was a bug: 4:3 videos would zoom up (proportionately) to 16:9 from time ...
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  • 622
3 votes
Accepted

How to connect 2 external non Apple monitors with 13" MacBook Pro 2017

To get two external monitors on your 13" MacBook Pro, you need a video adapter that supports pass-through charging a Type C DisplayPort cable Both displays can support 4K at 60Hz. From Apple's ...
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  • 81.7k
3 votes

4K 60Hz over DP with Late 2013 Macbook Pro 15" + Dell P2415Q?

Okay so I got 60hz working at 4K. Despite the fact that I swear I already tried this, the key was turning off MST. Unfortunately, I can't recall why I turned MST on in the first place. Did I create ...
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  • 81
3 votes
Accepted

MacBook Pro (Mid 2014) 4k external displays performance

Assuming you went from 1080p to 2160p your total screen area has gone from 4 megapixels to 16 megapixels. If you actually mean 'full 4k' 4096 × 2560, then your screen area is now in the order of 20 ...
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  • 98.8k
3 votes

2018 MacBook Pro + LG 4k display = no 60hz

For me it was an HDMI cable issue as Bunches answered. I used the one that came with my gaming monitor and it started working. So her answer is indeed helpful, nobody else mentioned trying another ...
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  • 141
3 votes

4K HDMI output from MacMini (late 2018) to LG C8 (OLED55C8PLA)

Here's what I had to do to make it work: Upgrade WebOS to latest version Switch to appropriate HDMI input (HDMI2 in my case) Turn ON "ULTRA HD Deep Colour" for HDMI2 (pictured below)
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3 votes

MacBook Pro 13" (2018) cannot drive 4k display @ 60Hz from right-hand USB-C ports

In 2016 and 2017, the left-hand Thunderbolt ports were higher bandwidth than the right-hand ones, and this would be expected behaviour. For 2018 models, all 4 ports should have the same performance. ...
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  • 39
3 votes

MacBook Pro 13" (2018) cannot drive 4k display @ 60Hz from right-hand USB-C ports

Same issue here, I bought a 2018MBP 512GB/16GB/I7 version, when I connect to my LG 4K (27UK850) display on the right (using equipped USBC to C cable), it only output 1920*1080 30Hz, the mouse and ...
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  • 31
3 votes
Accepted

Can a 2018 Mac mini support dual 4k monitors at 60 Hz?

Yes, the 2018 Mac Mini can support dual 4k monitors at 60 Hz connected the way you indicate. I have this setup myself. There are no caveats. Note: You do not need an "adapter" as such. You just need ...
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  • 66.1k
3 votes

How does display scaling work on Mac

What happens is that the system essentially renders the image offscreen at a much higher resolution where you haven't got "a third of pixel" and similar. Then that image is downsampled to ...
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  • 66.1k
3 votes

How does display scaling work on Mac

When you choose 'looks like 2560x1440' and that is not an integer scale factor of 4K (3840x2160), macOS creates a virtual display twice the size (i.e. 5120x2880). All software (OS and applications) ...
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  • 6,287
2 votes
Accepted

Sierra showing incorrect monitor in Display Preferences

To answer your questions about running a 4K display with a Mid 2012 MacBook Air 11"/13": Unfortunately the 2012 MBA isn't technically able to do so. The 2012 MBA has an Intel HD Graphics 4000 GPU ...
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  • 7,451

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