Dell U4919DW / MacBook pro 5k issue

@JeanLuc7 You have 2 statements there that sound really funny, given this conversation is on page 31, full of comments from people who are upset:

• "have come to terms with the problem"
• "Noboy expects Apple to acutally fix the problem"

@Everybody who disagrees: Best action is to call apple support and tell them of this problem

At this point I have pretty much come to terms that it won’t be fixed. I’ve been using the PBP “fix” since I got the monitor last May.

Sure it would be nice if apple fixed the problem but at this point I’ve gotten used to the PBP setup anyways.

If you are using Macbook Air or Mac Mini, and you bought a 5120x1440 monitor, no matter when you bought it, ask Apple for full refund because of false advisement. I did it and they made a full refund for me.

"If you are using mac mini 2018 or older, Macbook air that without external graphic card, you CANNOT use native 5120x1440 until you die because the internal graphic card only support maximum up to 4096 x 2160. APPLE can never solve this."

Thanks Morgan but some earlier post suggested that a Mac Mini 2018 running Window 10 can indeed drive a 5120x1440 monitor, which suggest its an OS problem. What do you think? And what was your solution?

As I mentioned before,

I think OS is different from Window, window is counting on pixels but OS does not.

Apple Support told me if horizontal is 5120 pixels, their OS regard it as 5k, so 4k cable do not support it.

*DONT Argue with me anything about the total pixels of 5120x1440 is less than 4k, argue with APPLE.*

*DONT Expect APPLE will solve this, i asked for a full refund in fact i can even get a better model with the price I paid for. APPLE will never solve it.*

I know it is non-sense, dont expect Apple will solve it. Just ask them for refund or make a charge back with your bank.

Only the new MacBook Air 2020 has the new 11th gen Intel graphics (Intel Iris Plus Graphics). Anything else not having that or AMD graphics will not support 5K wide single connection or 6K wide (single or dual connection).

The MacBook Pro 13" has older CPU with Intel graphics (Intel Iris Plus Graphics 645 or Intel Iris Plus Graphics 655).

I think maybe with 10.15.4, the work-around (setting DisplayPixelDimensions) for getting 5120x1440 is not required anymore? I checked the Overrides folder in 10.15.4 and it looks like Apple removed some overrides that only had the DisplayPixelDimensions property.

The workaround was for GPUs (AMD) that support resolutions wider than 4K. DisplayPixelDimensions is a property that can be added to an override file (a plist file) in /System/Library/Displays/Contents/Resources/Overrides/ for a display. This is the same property that is changed by the "Scaled resolution base" option in SwitchResX.

I'm saying that maybe in 10.15.4, that property does not need to be set anymore for the graphics drivers to choose the correct Scaled resolution base.

The response that Apple engineers are stating through their senior advisors: The resolution is not supported due to the Intel based graphics cards that I have with MBP 2019 13" and that the AMD graphics cards doesn't have the issue. I bought this laptop with the intent of using the highest resolution capable and now it's not allowing me to do that (sigh). The specs shows that it is capable of supporting the 5120x2880 resolution with one display. It's blatant false advertising!! I've read a post that people can get the intended resolution with windows OS installed on their MBP. If that's the case, it can't truly be a hardware/intel graphics issue. Now I'm stuck with a fairly new laptop that I can't use with my new 49" Dell Ultrasharp.

Frustrated with the time for Apple to resolve this apparent software issue, I just purchased a 2019 MacBook Pro 16 and can confirm that it fully supports the LG monitor at 5120x1440 monitor. My 2019 MacBook Pro 13" was given to another family member.

I did try the dual-cable approach but I found that a compromise as well. At first it seemed workable but not having the menu bar across both screens was annoying. Occasionally when waking from sleep the displays switched and I was constantly invoking the Main/Sub Screen Change option on LG's input panel.

Now all I have to do is deal with the cpu panics when waking from sleep. Apple is apparently working on that issue too. I look forward to obtaining a stable state sooner rather than later. No matter what angle I pursue there always seems to be a compromise or caveat built in. :)

I'm sorry, but this post is completely useless. Of course, a lot of data is transferred at large resolutions, which is nothing new. This applies to HDMI as well as DisplayPort. But if the Mac can operate 4k screens (3840x2160), then it will probably also be able to control 2.5k (5120x1440) - also via HDMI. And if HDMI is really critical - why does it work so well with all the Windows laptops out there? And even with BootCamp on our Mac's, it works very well via HDMI. You just have to pay attention to good cables.

However, it is the case that Apple has had problems with HDMI timing for ages - even with FullHD. But this is a macOS problem and not one of the cables or the transmission methods.

You are right with your assumptions with PbP. It works seamlessly, windows can be shared and stretched over both "screens" without "resistance". However, there are some issues. Regarding full screen, the setup works as you describe. You can have a full Youtube window on one side or shre just one screen with Zoom while the other still untouched. But this does not work with the Apple Full screen feature, because you have to disable the "multiple desktop" feature to stretch windows over both screens. With this feature enabled, windows will be cut in the middle, you can only see their left or their right. But with this feature disabled and using macOS Full Screen mode, the other screen goes black, you just see the Full Screen window. Still there is a solution. You can setup the double click on a window title bar to maximise the window. This also results in a full screen window, but the othger screen will stay reactive (and visible),

Two more issues: the top menu bar will onbly be seen on one screen. And the dock will stay either on the löeft or the right screen - as long as it resides on the bottom. Mine is on the right.

Hello icrowe987,

Yes, I see the success with my own eyes.

I have the full 5120x1440 resolution with my MacBook Pro 13" i7 2020. The MacBook is connected with a single usb-c cable to the monitor (the cable also works as a charger for the MacBook). The monitor is a Dell U4919DW.

Best reagards,

lorscan

Hi everyone,

I also plan to buy a Dell U4919DW but am concerned after reading this thread. I have a MacBook Pro 13" (2018, four Thunderbolt 3 Ports)

Prozessor 2,3 GHz Intel Core i5

Memory 8 GB 2133 MHz LPDDR3

Graphics Intel Iris Plus Graphics 655 1536 MB

If I understand correctly then right now with macOS catalina the Dell won't work with its native resolution but only 3840 x 1080

with my Macbook. The only viable option to get the full resolution is to connect the MacBook with two cables to the Dell and use the PIP setting to use it as 2 separate screens.

In macOS Big Sur the issue seems fixed and once that rolls out I will be able to use the Dell normally with its native resolution without any additional program or "hacking" something.

Is that correct or did I miss something?

At least for the MacBook Air 2018 and newer it seems to be better as there is a new driver in Big Sur which supports 5120x1440. It would be really confusing not to add this to the MacBook Pro by Apple.

Grant Bennet-Alder wrote:

You would be Using "Extended Desktop" and the Arrange pane to create a large extended desktop from two virtual screens side-by side on the existing Display, run by two cables. Then you can open as many windows and place them wherever you want on that "Extended Desktop"

Ah okay, I get it. So with this workaround I can't emulate using three screens and put e.g. a browser in the middle of the screen because I can only put a window either on the "left screen" or on the "right screen" but a window can't span both screens in the middle. What a pity.

I really like the Dell and the 49" curved screens in general. Do you know if it's the same issue with all of them? e.g. the Samsung C49RG94SSU or the LG 49WL95C-W?

And does anyone use a 49" curved screen in the 3840x1080 resolution? Is it okay to use?