Mac Mini 2018 and LG 49WL95C-W 49-Inch Curved 32: 9 Ultrawide

I just purchased a Mac Mini (although in the system preferences it says that is a 2018 model); however, it is the latest model. I also purchased an LG 49WL95C-W 49-Inch Curved 32: 9 Ultrawide monitor. The monitor runs perfectly fine with my laptop (MacBook Pro 2017 model) at the expected resolution (5120 x 1440).

However, the Mac Mini can only go to 3840x1080.


After reading about external GPUs, I decided to buy a Razer Core X Aluminum External GPU Enclosure (eGPU) and a Radeon Rx 590 Gaming 8G Graphics Card,(Gv-RX590GAMING-8GD). After spending more than $3500 in this setup (without monitor), the Mac Mini still does not work at 5120 x 1440. However, my older Mac Book Pro does.


Any other suggestions before I return all of these?


Thank you in advance!

Mac mini, macOS 10.14

Posted on Jun 12, 2019 9:20 AM

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121 replies

Oct 15, 2019 5:20 PM in response to ohmr

I just tried out a custom resolution in SwitchResX (after disabling SIP), grabbing the monitor info for my LG 49WL95C-W from my AMD driver on my Windows 10 machine. I did my best to translate that over. "Back porch" was computed from the totals for both horizontal and vertical. I chose "positive sync." for both because the (working) profile for 3840 x 1080 had them checked. The horizontal scan rate set itself when I saved at 88.860 after I entered in everything else. Alas, it did not work. If someone can spot how I entered the info incorrectly, please LMK. Thanks.


Edit: Also tried unchecking "Positive sync." for the vertical, presuming that this is "Timing Polarity" from the AMD specs. Also failed to activate. Drat.


I have screenshots of both the AMD display specs and the SwitchResX custom profile here:


https://photos.app.goo.gl/9eDLU8BBMtgp2ZQE7


Jan 19, 2020 11:19 AM in response to VoV5

VoV5, I have that monitor and a brand new MBP with the latest OS updates. It still won't do 5120x1440. For a machine of this cost, I would expect better than this - at least an acknowledgement from Apple that it's being addressed.


Thankfully Windows does, so when I'm not working, I switch. Honestly seeing less and less value in these machines, they look pretty, but better spec'd hardware and better driver support can be bought for less in PC land.

Jan 23, 2020 11:42 PM in response to AlexP788

Great solution. This will probably work with the Macbook Air 2018, I assume. However, to have to spend an additional $400-$500 on an external Radeon graphics card setup *****. I wish it the monitor would just work. My thinking is a programming switch due to competition between LG and Apple.


[Edited by Moderator]

Jan 27, 2020 2:19 PM in response to Harveybl

I finally got 5K resolution working (5144 x 1440 )with my 2018 Mac Mini on my new LG 49WL95C Ultra Wide monitor. (as per suggested by AlexP788).


I had to spend more money on an external GPU. I purchased the Razer Core X Chroma, with the fancy little lights ($400), you can get it without the lights for $300.


I also purchased the Sapphire Pulse Radeon RX580 graphics card.


Everything works great and it was all just plug and play. See pictures below.





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Mac Mini 2018 and LG 49WL95C-W 49-Inch Curved 32: 9 Ultrawide

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