Dell U4919DW / MacBook pro 5k issue

Hahaha. Super cool solution. Need to try that.

i tried switchrex but it only scaled 3840 x 1080p up to 5120 x 1440p i use the thunderbolt 3 kable what comes with the monitor as connection

PLS inform me if its working.

I have a amd graphics card but it didnt work for me at all....

Hi all

I took this up again (3840 x 1080 as max resolution on the 49" wide screens) with Apple (hours of discussions). We all now the limitations (if you read this treat): not possible to go to 5120 x 1440 solution on Intel graphic cards - only AMD or M1. Apple engineers know the problem. And again: It works on Boot Camp AND 5120 x 2880 works aswell (so the LG Ultrafine 5K)

Do they know about the issue? YES (this is internally documented!).

Will they solve it? NO!

Do they care? NO!

Does pride come before the fall? YES!

So summary for all: A 49" Ultrawide Monitor will never work on a MacBook Pro with a Intel Graphic Card (on MacOS). You need an AMD or M1 in order to receive full resolution. No cable or any software will help you to solve that. Its a MacOS (software) issue.

Solution options:

1. Use Boot Camp
2. Buy a new MacBook (Pro) M1
3. Buy a used MacBook Pro with AMD
4. Use 3840 x 1080 as the solution

Hi all

I took this up again (3840 x 1080 as max resolution on the 49" wide screens) with Apple (hours of discussions). We all now the limitations (if you read this treat): not possible to go to 5120 x 1440 solution on Intel graphic cards - only AMD or M1. Apple engineers know the problem. And again: It works on Boot Camp AND 5120 x 2880 works aswell (so the LG Ultrafine 5K)

Do they know about the issue? YES (this is internally documented!).

Will they solve it? NO!

Do they care? NO!

Does pride come before the fall? YES!

So summary for all: A 49" Ultrawide Monitor will never work on a MacBook Pro with a Intel Graphic Card (on MacOS). You need an AMD or M1 in order to receive full resolution. No cable or any software will help you to solve that. Its a MacOS (software) issue.

Solution options:

1. Use Boot Camp
2. Buy a new MacBook (Pro) M1
3. Buy a used MacBook Pro with AMD
4. Use 3840 x 1080 as the solution

UPDATE:

I am using a MacBook Pro 13 (late 2016), MacBook Pro 13 (2018) and MacBook Air (2019). All devices on BigSur 11.2.1

Of course. I am use 2 cables at the same time: 1 x USB-C cable, and 1 x HDMI cable, both of which come with the Dell Monitor.

To me this suggests that the problem is sitting somewhere in Mojave. We know the monitor works when connected to a PC, and we know the Mac Mini hardware drives the monitor at full res, and we know it works in "dual monitor / expanded desktop" mode like I have it setup. Some bit of code somewhere in Mojave is somehow not recognizing the monitor's native resolution, and it's just defaulting to 3840x1080. Let's go Apple!

Some other users appears to disagree with your results. You did not say what model-year MacBook Pro you are using, nor what MacOS.

The chatter here is that Big Sur is a requirement to go wider than 4096 pixels wide on one cable.

(and only supported for 2017 and later MacBook Pro).

Thanks for the updated information on what Macs and what MacOS.

Based on other Users experience, we would not expect your 2016 model to be able to support wider than 4096 pixels on one cable.

But if you are NOT cluttering up the experiment by inserting a dock, and ARE using a direct DisplayPort cable (or its cousins ThunderBolt-display or ISB-C-display) that WOULD be expected to work.

Sorry, I don't understand what you want to say with "But if you are NOT cluttering up the experiment by inserting a dock, and ARE using a direct DisplayPort cable (or its cousins ThunderBolt-display or ISB-C-display) that WOULD be expected to work."

Connecting your external display to an External Dock device, and Driving the display from a port on the Dock, may or may not work, depending on exactly how the Dock produces its signals for displays. Some Docks produce display signals on some of their ports directly, some use software-based solutions to "fake" the display connection.

On the second point, we would not expect HDMI connections to work at these high resolutions. HDMI was invented for consumer TV sets. Running a device this large is very difficult to accomplish over HDMI, DVI, VGA, or other interfaces. But it should work over a direct DisplayPort or Thunderbolt or USB-C cable, PROVIDED you do not interpose any other devices or Docks.

Since you did not specify in your earlier post whether or not you had used a Dock and what cabling/connection-method you were using, I was forced to answer the general case.

Please do not be offended, I had no way of knowing that. If this does not apply to you, please ignore it.

So, the Thunderbolt to Thunderbolt cable didn't work .... in fact nothing displayed on the monitor at all!

I suspect that as the monitor only supports USB-C and not Thunderbolt 3 - it didn't detect the signal from the Mac.

I'm waiting on a Thunderbolt 3 to DisplayPort cable to arrive this evening too, I suspect this will finally solve the issue so I will update again once that arrives!

I have seen ads for many such adapters that claim the adapter supports up to "4K" 3840 by 2160.

Only the Mooshi adapter above seems store support more. There many be others, but they are few and far between.

according to Dell's information, the USB-C input is the "poor cousin" of the other inputs:

Input Connectors

2 x HDMI 2.0 (HDCP 2.2) (10-bit color @ 60Hz)
1 x DP 1.4 (HDCP 2.2) (10-bit color @ 60Hz)
5 x USB 3.0 Downstream port
2 x USB 3.0 Upstream port
1 x USB Type-C (Alternate mode with DP1.4, Power Delivery, and USB2.0) (8-bit color @ 60Hz)

note, for example it supports 8-bit color while the other inputs support 10 bit color.

Dell UltraSharp 49 Curved Monitor: U4919DW | Dell United States

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Odd. My monitor hasn't arrived yet, so I'll have to wait to troubleshoot. If anyone else tries that Moshi cable, let us know if it solves the problem.

It kinda defeats the purpose of the USB-C though, having power and data through a single cable.