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Finally 3440*1440(60Hz) external display is perfect working on my rMB through HDMI

neutron1988

neutron1988

macrumors newbie
Original poster
Aug 14, 2015
24
11
Yesterday I started another thread to seek for help about the refresh rate on my external DELL U3415W.
Today morning when I updated the OS X to the latest version (EI Captain Public Beta 5), everything works perfectly fine. Finally I can got both 30Hz/60Hz(NTSC) and 50Hz(PAL) on the native resolution 3440*1440.

And I use a usb-c to HDMI adaptor which have another usb-c for charging when I use the external display

Can't wait to share with you guys !
IMG_3301.JPG
IMG_3302.JPG
 
Last edited:
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Excellent. Even 60 on NTSC. Very cool. How is the beta working for you otherwise. Any substantial improvements in terms of performance and features (vs. Yosemite)?
 
Robbenisland said:
Excellent. Even 60 on NTSC. Very cool. How is the beta working for you otherwise. Any substantial improvements in terms of performance and features (vs. Yosemite)?
Click to expand...
It works as good as the Yosemite, except a few UI bugs which appears randomly. And actually the only feature I was very satisfied is the "pin this Tab" on Safari.
 
Hi Neutron1988, I'm in a market for that Dell U3415W as well and will hook it up to rMB 2015.

On your set up, did u use the HDMI cable that supplied with the monitor or your had to buy a new one. If so, which brand/model did u use?
 
Are you using the original Apple USB-C to HDMI adapter? Curious as I thought this would be limited to HDMI 1.4, not 2.0. For your resolution+refresh rate, you would need to use HDMI 2.0.
 
Sternkucker said:
Are you using the original Apple USB-C to HDMI adapter? Curious as I thought this would be limited to HDMI 1.4, not 2.0. For your resolution+refresh rate, you would need to use HDMI 2.0.
Click to expand...


Yes, I'm curious as well as the adapter page from Apple stated..

The USB-C Digital AV Multiport Adapter lets you connect your MacBook with USB-C port to an HDMI display, while also connecting a standard USB device and a USB-C charging cable.

This adapter allows you to mirror your MacBook display to your HDMI-enabled TV or display in up to 1080p at 60Hz or UHD (3840x2160) at 30Hz. It also outputs video content like movies and captured video. Simply connect the adapter to the USB-C port on your MacBook and then to your TV or projector via an HDMI cable (sold separately).

Use the standard USB port to connect devices such as your flash drive or camera or a USB cable for syncing and charging your iPhone, iPad, or iPod. You can also connect a charging cable to the USB-C port to charge your MacBook.

Note: The Apple USB-C Digital AV Multiport Adapter is not compatible with the G-Tech G-DRIVE mobile USB 3.0 Hard Drive (Apple part number HF4F2VC/A).
 
I had the Dell U3415W for a week and was using it at it's native resolution and 60Hz so I assume the Apple digital adapter does support HDMI 2.0. I ended up returning the monitor since it was just too large for my desk at work (could not see around the monitor easily when having meetings) but it was working fine before that.
 
Mhm, 3440x1440 at 24 bit colors and 60 Hz, 8b10b coding comes out at 8.91 GBit/sec, just within the 10.2 GBit/sec of HDMI 1.4. Correct?
So it might still only be HDMI 1.4. Anybody out there to test with 4k@60Hz?
 
I've tried using the official Mac adapter with a HDMI 2.0 cable to my 4K Samsung monitor and I can only get 30hz which is seriously unusable for anything as the lag / tearing is very noticeable.
 
Nice!! :D

In the market for the u3415w monitor as well, did you guys noticed some backlight bleeding on yours?
 
neutron1988 said:
Yesterday I started another thread to seek for help about the refresh rate on my external DELL U3415W.
Today morning when I updated the OS X to the latest version (EI Captain Public Beta 5), everything works perfectly fine. Finally I can got both 30Hz/60Hz(NTSC) and 50Hz(PAL) on the native resolution 3440*1440.

And I use a usb-c to HDMI adaptor which have another usb-c for charging when I use the external display

Can't wait to share with you guys !
View attachment 576410
View attachment 576411
Click to expand...

Hi Do you use the nMB's keyboard directly with U3415W just like the image in first post or with an external keyboard?

I am thinking to set a setup like this but not this monitor , I may go for the 2515 (25" 2k monitor).
 
sammcj said:
I've tried using the official Mac adapter with a HDMI 2.0 cable to my 4K Samsung monitor and I can only get 30hz which is seriously unusable for anything as the lag / tearing is very noticeable.
Click to expand...

That's because you are trying 3440x2160 which remains stuck at 30hz because of hardware bandwidth limitations. This thread is about 3440x1440 which is the resolution ultra-wide monitors use, but not 4k.
 
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lllfyc said:
Hi Do you use the nMB's keyboard directly with U3415W just like the image in first post or with an external keyboard?

I am thinking to set a setup like this but not this monitor , I may go for the 2515 (25" 2k monitor).
Click to expand...
An external keyboard & magic mouse must be necessary because it would be to close for your eyes when you use the rMB's keyboard.
 
Ahboyd said:
Hi Neutron1988, I'm in a market for that Dell U3415W as well and will hook it up to rMB 2015.

On your set up, did u use the HDMI cable that supplied with the monitor or your had to buy a new one. If so, which brand/model did u use?
Click to expand...
The one supplied with the monitor works fine:)
 
neutron1988 said:
Finally I can got both 30Hz/60Hz(NTSC) and 50Hz(PAL) on the native resolution 3440*1440.
Click to expand...

How well does the rMB drive the monitor at the native 3440*1440 resolution? Do you notice any stutter when resizing windows or scrolling through long websites or mail?

Also are you running this as extended or mirrored displays?
 
Hey all.. just pull the trigger on this monitor as well. Here are my observation..

In short.. 3440x1440 is nothing for the rMB!

I just got my (4 days) Dell U3415W with Macbook 12" 1.2GHz El Capitan connect to the monitor via HDMI and using Apple's USB-C Digital AV Multiport Adapter.

I will be talking about which most reviews on the internet won't mention so you have would have better info.

- Volume up/down won't work right off from your keyboard. My work around is to hook up a speakers with an external volume button. And the volume adjusts on the monitor is a soft button which somewhat difficult to access when suddenly the video sound is very loud.

- Mirroring display can't display full 3440x1440 on the monitor. It will have black margin on the left and right side of the screen. See picture below
screen-shot-2015-11-21-at-6-28-03-pm-jpg.601385


- After awake from sleep, the resolution is still set at 3440x1440. However, it will be shrunken down and you can see black margin on 4 sides like picture below. The work around is the refresh the resolution to whatever and choose 3440x1440 again!
screen-shot-2015-11-21-at-8-24-50-pm-jpg.601393


- Monitor stand is highly adjustable considering most OEM monitor stand won't be this flexible. The highest point of the lowest adjustment would be 15 3/4" and the highest point for the highest adjustment is 20". This is good for your neck.

- Find a good windows management utility.. I'm currently trying out Moom and BetterSnapTool. They are pretty good. However, sometime it would have a hick up like it won't do resizing properly then i had to restart the computer.

Anyway, these are my 4 days observation. Generally are very happy with the monitor. Great color, minimal back lights bleed (provided that you are not in a dark dark room).
 
neutron1988 said:
Yesterday I started another thread to seek for help about the refresh rate on my external DELL U3415W.
Today morning when I updated the OS X to the latest version (EI Captain Public Beta 5), everything works perfectly fine. Finally I can got both 30Hz/60Hz(NTSC) and 50Hz(PAL) on the native resolution 3440*1440.

And I use a usb-c to HDMI adaptor which have another usb-c for charging when I use the external display
Click to expand...

Good grief, that thing is huge. Do you really need anything bigger than 1650x1080 that my 2007 Dell outputs?
 
Well, many people like to work with two external monitors. This is sort of intended to function as a single monitor with the workspace of two.
 
neutron1988 said:
Yesterday I started another thread to seek for help about the refresh rate on my external DELL U3415W.
Today morning when I updated the OS X to the latest version (EI Captain Public Beta 5), everything works perfectly fine. Finally I can got both 30Hz/60Hz(NTSC) and 50Hz(PAL) on the native resolution 3440*1440.

And I use a usb-c to HDMI adaptor which have another usb-c for charging when I use the external display

Can't wait to share with you guys !
View attachment 576410
View attachment 576411
Click to expand...

It appears we have the same setup. Did you experience issues with your external display screen going black for a second or two and then coming back on? I got the Dell U3415W on Thursday and connected it to my 2015 rMB via the Apple USB-C to HDMI adapter and have experienced this issues lots of times. Very disappointed but if you have any suggestions for how I could resolve this, I'd greatly appreciate it :)
 
I have the LG 34U97 connected HDMI to the apple adapter and the best I get is 50 hz PAL. I need to do 2560 to get 60 hZ, but then everything is fuzzy.

2016 retina macbook
 
Salty Pirate said:
I have the LG 34U97 connected HDMI to the apple adapter and the best I get is 50 hz PAL. I need to do 2560 to get 60 hZ, but then everything is fuzzy.

2016 retina macbook
Click to expand...
No issues with screen blanks/flickers when running at 50Hz?
 
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