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User profile for user: Mark from 2Much
Mark from 2Much Author
User level: Level 1
34 points

Using a Mac Mini on Dell U4919DW Ultrawide Monitor.

(A part of this was posted in another forum but it is more relevant here).


I just purchased a Mac Mini 2018 and Dell U4919DW Ultrawide Monitor. I should be able to get 5120x1440 Resolution out of this setup, but at best I can get 3840x1080.


I am connected via the Dell-included USB-C cable. I tried with the included HDMI cable but it too did not work.


Connecting the monitor to my PC via Display Port Cables DID work - I was able to get full 5120x1440 resolution at full 60hz. Just not on my new Mac Mini.


I called Dell, and their technical support was a complete joke. The lady on the phone basically said "If it works on a PC, it works", without much else to offer.


I called Apple and the tech, David, tried alot harder, easily spending about 20 minutes with me trying to find the problem. (Apple tech support is why they always win my business). He was not able to solve the problem but has created a case # and escalated this to Apple Engineers. By Apple and Dell's own documentation, I should be able to get 1440 lines of resolution in my setup.


Has anyone here experienced anything similar? Any suggestions are appreciated.





Mac mini 2018 or later

Posted on Jan 11, 2019 10:56 AM

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User profile for user: Mark from 2Much
Mark from 2Much Author
User level: Level 1
34 points

Posted on Mar 11, 2019 8:09 PM

Hi AmMac, yes it would be my pleasure.


First, use 2 cables: Connect the included USB C cable AND the HDMI cable from your Mac Mini 2018 to the Dell u4919dw, and power it up.


Next, enable PBP modern the Dell Monitor by using the Monitor's menu navigation switches on the bottom of the monitor (just right of the center)


Finally, Click on System Preferences / Displays. Your Mac should now see 2 monitors. Set the resolution of both to "Default for Display", not scaled.


If the monitor is backwards, meaning the right side is on the left, click on "Arrangement" and drag one monitor to the right side of the other.


Then exit this window and you're done! You are now in nice 1440 vertical pixels and 5000+ horizontal pixels.


The last thing you may want to do is adjust the color but don't worry this is easy. Go back to System Preferences / Displays again, click on Color for both monitors, and make sure they are both set for Dell U4919DW. This way both "monitors" will exactly match the other in color temperature.


You will LOVE this setup.


For some extra coolness, get Magnet: http://magnet.crowdcafe.com/index.html this program will give you a fast way to move your windows around and "snap" them into place. This program + this monitor make me super productive.


Enjoy!!



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User profile for user: Echorun
Echorun
User level: Level 1
4 points

Jan 12, 2020 2:10 AM in response to Mark from 2Much

This was just the explanation I was looking for. Many thanks Mark!


One minor addition that may prove useful for other owners of this monitor. I'd followed all of the above but was still had a colour mismatch which was most obvious as a vertical line on any window that crossed the PBP boundary at the centre of the monitor.


This was despite having selected the "Dell U4919DW" profile in System Preferences/Displays/Colour for both PBP screens: Dell U4919DW (1) and Dell U4919DW (2). Quite by accident I noticed one afternoon that the full list of available profiles included three duplicate entries for "Dell U4919DW". You'll need to deselect 'Show profiles for this display only' to see the full list on each of (1) and (2).


For reasons that I've not been able to fathom, the default was for profiles that were named the same but not quite identical. Once the same profile is selected (fairly quickly by trial and error) on each side (1) and (2), the screen finally delivers.


Thanks again, Mark


Daniel

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User profile for user: fance
fance
User level: Level 1
9 points

Jan 18, 2020 9:00 PM in response to killmall

@killmall - you might want to go back and ensure you're actually getting you recommended daily allowance of pixels with this setup.


I tried SwitchResX and had no joy, so tried ResXtreme and while I managed to get the display to scale to 5120x1440 when I went into SwitchResX to work out what the display was actually working at, it turns out it's 3840x1080 being scaled up in software - hence it looking blurry on my screen compared to "real" 5120x1440 in side by side mode (with two cables).


Once you've tried PbP/Side by Side let me know if I'm wrong, but I think we're still looking for a solution from Apple.

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Using a Mac Mini on Dell U4919DW Ultrawide Monitor.

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