Dell U4919DW / MacBook pro 5k issue

Yes, there is tearing when scrolling or moving a window - video play in a window does not create tearing. Minor issue to me, but depends. I use the "separate spaces off" option, because cut windows in the middle would be a major issue for me. On my 49 DELL there are no differences in color, using the same color profile for both sides. Regarding the background picture, I only use a color gradient picture from blue to orange, which I have duplicated and mirrored to avoid color differences. However, I found 32:9 pictures that can easily be divided in two, which results in a perfect widescreen background. For smaller images, mirroring should help.

Regarding the Fullscreen option, I still do not know why Apple blacks out any other monitor (or at least make it an option) I have used a three-monitor setup for ages (now 2 with the DELL and a small 13"-Selfmade FullHD monitor for Outlook), and as this blackout was the only option when they introduced the feature in 10.7, I never got really familiar with Full screen mode

Extended Desktop was available in the Mac-II in 1987, if you had two display cards available. It has always been extremely well-behaved, and since it is implemented at System level, available to all Applications that are not incredibly sloppy.

"Full Screen" is a reverse-port from the iPhone, the land of tiny screens and one-at-a-time processing.

How did you get a full refund? Was your 2019 MBP still within the eligible refund window or did it lapse? I’ve tried getting a refund as well so I can get the 2020 version and they wouldn’t allow me because I bought it thru a military base exchange in Sep 2019.

Hi lorscan,

Are you seeing success with your own eyes using a 2020 MBP 13" (or 2020 MBA) with 10th gen CPU, or have you been told it will work?

And by success, of course we all mean full 5120x1440 with a single cable. And if so, which monitor are you using again?

thanks.

Super, thanks for confirming!

Given that the older CPU/iGPU versions worked fine with Windows and Apple obviously finally made it work with their latest version, crazy that they didn't/won't provide the similar driver for all the previous versions.

That's great news!

Hopefully this also works with older machines, in my case with a 2016 MBP with Intel Iris Graphics 550.

Just checked my virtual machine with Big Sure Beta 1. No changes to the EDID overrides in Big Sure, therefore they might have fixed the bug in the intel driver and not just provided a "hacky" workaround.

I will install Big Sure on a separate partition on my MBP this weekend and will come back with the results.

The System Information.app shows the following information:

Intel UHD Graphics 617:

  Chipsatz-Modell:	Intel UHD Graphics 617
  Typ:	GPU
  Bus:	Integriert
  VRAM (dynamisch, maximal):	1536 MB
  Hersteller:	Intel
  Geräte-ID:	0x87c0
  Versions-ID:	0x0002
  Metal:	Unterstützt, Funktionsset macOS GPUFamily2 v1
  Displays:
Farb-LCD:
  Displaytyp:	Integriertes Retina-LCD-Display
  Auflösung:	2560 x 1600 Retina
  Framepuffertiefe:	30-Bit Farbe (ARGB2101010)
  Synchronisierung:	Aus
  Eingeschaltet:	Ja
  Helligkeit automatisch anpassen:	Ja
  Verbindungstyp:	Intern
Dell U4919DW:
  Auflösung:	5120 x 1440
  UI sieht aus wie:	5120 x 1440 @ 60 Hz
  Framepuffertiefe:	30-Bit Farbe (ARGB2101010)
  Display-Seriennummer:	8FFZWP2     
  Hauptdisplay:	Ja
  Synchronisierung:	Aus
  Eingeschaltet:	Ja
  Rotation:	Unterstützt
  Helligkeit automatisch anpassen:	Ja
  Verbindungstyp:	Thunderbolt/DisplayPort

And the AGDCDiagnose is attached to this post.

Mister_Highping wrote:

Hopefully this is the right info you need:

https://discussions.apple.com/content/attachment/b7e42a89-5ff5-4b5f-94db-dc305702bfea

The output of the log stream doesn't bring any information.

The SwitchResX output looks good.

For log stream, you type it in Terminal.app, turn off the display, press Command-K to clear the Terminal.app, then connect the display, and when you see an image, select all, then copy and paste into a new plain text file.

I wonder if I need to override my display's EDID to match your Dell to get the 5120x1440 mode working? Nope, that doesn't seem to work - my display shows up as U4919DW instead of XV273K and has a 3840x1080 timing, but not 5120x1440. Maybe it works for Intel UHD Graphics 617 but not Intel UHD Graphics 630?

Here is the output of the terminal logging:

Are you already using Big Sur and don't have the default resolution or are you trying to achieve it with Catalina? Maybe they wrote new Intel drivers for it?

I am not sure how to change that to be honest. The system settings show a refresh rate of 60 Hertz and right now I am not able to install a custom resolution in SwitchResX even with SIP deactivated. The heat of my MacBook Air is normal right now I would say.

<<Oh so I could also "split" the screen in 3 windows - left, middle, right? If so, what's the difference between this workaround and the "real deal" using it as one screen with the full resolution?>>

There is nothing wrong with that CONCEPT, but your description uses terminology already used for something that is NOT the same as what you are describing. Apple uses "split screen" to do literally that: spit an existing screen into multiple panes.

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"

.

Although reports of improved features in upcoming software are encouraging, and may indicate progress in the right direction, you can not count on ANYTHING you hear about Apple software that has not yet been released.

The features many not be released as tested, or may even be withdrawn completely before release.

<<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. >>

Practically speaking, that is NOT correct.

You can open three WINDOWS and place them in any positions across the ENTIRE Extended Desktop, INCLUDING as many as you like split across the virtual "seam" between the displays. You can create three short windows the full width of the Extended Desktop, and stack all of them across the "seam". Or you can create one to the left, one across the center, and one toward the right. But NOT "split screen" -- that term means something else.

Or you can create one Enormous Window and have it take up almost all the available space. But with Extended desktop, "Full Screen" setting is not useful, and the MenuBar stays on one display.

Awesome! That's exactly what I need! So the two-cable-workaround will work well for me. I assume apps like Magnet or Better Snap Tool work with this setup as well?

Thank you so much Grant, such a huge help!

"Extended Desktop" has been part of MacOS since the early days. It worked on the Mac-II under system 4.5 with MultiFinder in 1987.

Every well-behaved Mac Applications can use it without any additional work.