Dell U4919DW / MacBook pro 5k issue

Anyone out there happen to have access to the beta of 10.15.3? See any difference? If Apple created a workaround for the LD display in 10.15.2, I wonder if that means they are going to release additional workarounds for other ultrawide monitors in 10.15.3.

joevt wrote:

The work-around is to create an override that sets DisplayPixelDimensions manually or using SwitchResX, similar to the file in /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-1e6d/DisplayProductID-9e7b for Catalina.

The following script lists all overrides that use that property:

for thefile in $(grep --include 'Display*' -l -r DisplayPixelDimensions /System/Library/Displays/Contents/Resources/Overrides/ ); do

printf "%s " "$thefile"

eval $(plutil -p $thefile | grep DisplayPixelDimensions | sed -E 's/.*0x(.{8})(.{8})}/echo $((0x\1))x$((0x\2))/')

done

The work-around doesn't work for Intel graphics because macOS Intel graphics drivers do not support resolutions wider than 4096. Macs in the future that use Ice Lake (10th gen Core CPU with gen 11 graphics) will probably not have that limit.

So what you're saying is the problem is the MacOS graphics driver, because I can get the full resolution on my MBP 13", that has an Intel Graphics card, if I boot to Windows.

marino389 wrote:

Anyone out there happen to have access to the beta of 10.15.3? See any difference? If Apple created a workaround for the LD display in 10.15.2, I wonder if that means they are going to release additional workarounds for other ultrawide monitors in 10.15.3.

I have an LG display w/ a MBP 13". Is there some "work around" besides using PbP that will all me to get full 5120x1440 resolution using a single cable?

Unfortunately the issue was not resolved for the MacBook Air 2018 and the Dell U4919DW. :(

At the moment I am working with the PbP solution but I am not happy about it. Do some Apple engineers read in this forum or is there a way to contact them via some support formular/case?

Apple Engineering Movers and Shakers do NOT troll the forums looking for issues, You should assume that the only people reading your postings here are other users like you, looking for solutions. Apple does not know there is an issue unless Many people with the issue contact them.

If your problem is not solved, be sure to use the Contact Support link at the top of every forum page, or another method if that is more convenient for you. Also, be certain that the person you talk with files a Bug Report and agrees that your problem is NOT solved -- if you are passive, they will assume their contact with you resulted in a Solution, which does not help push the issue forward.

Don't waste your time. I have contacted APPLE and their So-called Senior Advisor told me they cannot fix it right now(11-02-2020). Their engineer team even don't know what is the problem. They do not have a date to fix this.

Then I asked for full refund because in your website mentioned that mac mini-2018 support "Maximum" up to 5120x2880 but right now they do not support 5120x1440 which is half of above. They said they can do nothing for me but wait.

I have sent an email to my local customs and ask them to help me make a refund for false advertising on Apple's part. If it does not work I will go for credit card charge back.

This resolution problem of 5120x1440 was discussed since Jan 2019, no solution was given by Apple after 1 year. What do you expect? Trash

For those who raised this problem one year ago having problem with Dell 49" monitor (5120x1440), I have to send you my love. How can you wait for ONE year for this stupid problem, which can work on Window / Window installed on Mac, but not on Mac itself.

*Using Mac Mini 2018 with HDMI 2.0 cable(by Samsung) connected to Samsung C49RG90 with 3840x1080 resolution only*

In fact, I think most of them have come to terms with the problem. You can operate the monitor in picture-by-picture mode. This even has one or the other nice side effect (full screen only on half of the monitor). Others have switched to an eGPU. And nobody expects Apple to actually fix the problem.

My assessment is based on the fact that the comments in this area became less and less. And if there were new entries, it would be more like: "My 15" Macbook does it! "I am satisfied with PbP myself, I do not lack the additional USB-C port required for this.

No one would satisfy with side-by-side solution on this problem.

It is ridiculous!!!

If I use two cable connect my mac to the monitor why don't I buy 2 $200 monitor but 1$2000 monitor?

Apple support is trash on this case.

They are not aiming at solving the problem. (Either a full refund for false advisement or make 5120x1440 work)

They are try their best to solve you and want you to give up.

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.

I am waiting for Type-C to Disport port cable arrive.

I dont think splitting it solve the problem.

I dont want to be solved.

I ONLY need Apple to solve the problem because it is their mistake, their false advisement.

After someday they may add the description of the mac as below:

Up to two displays:

One display with 5120-by-2880 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096-by-2160 resolution at 60Hz connected via HDMI 2.0

*Only apply to ratio at 16:9*

As you might have experienced, moving windows in the center of the monitor temporally tears them. However, video works fine, but gaming may also cause tearing in the center of the monitor when using PbP.

I fully understand your complaints. But we also know that it works fine with AMD graphics chipsets. 15" and 16" MBP owners don't have this issue. eGPS owners don't have it. It is only a flaw with the Intel graphics driver provided by Apple. And we also know that the Intel graphics driver for Windows works fine. So we are at the same question since 2006 with the first aupported Intel chipset with GMA950: why does Apple develop their own graphics drivers? Why don't they ask professionals at Intel to perform this task successfully (and with the same speed as with Windows)?

Yes, exactly. And iGPU means "Intel Graphics Driver developed by Apple".

BTW Intel: Maybe this will change with some later Macs supporting Ryzen processors with integrated AMD graphics. But of course, it does not solve the current issue with Mac Minis and 13" MacBooks.

Note for Mac users:

https://www.dell.com/support/article/zh-hk/sln314416/dell-u4919dw-system-requirements-and-supported-configuration?lang=en&ref=topsolutions

If you are using an Intel Graphics card on your Mac, you will be able to display upto 3840 x 1080 resolution with the USB-C connection to the Dell U4919DW monitor.

For a higher resolution of 5120 x 1440 with the USB-C connection, use a Mac with a non-Intel discrete graphics card (NVIDIA or AMD).