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

looks like they did not fix it yet ((

i spent hours without any result to see "5k" on this monitor with my 2018 mac mini. Very disappointed!

i've installed Windows 10 using boot camp and it immedeitly have showed me 5k and it look way better on this device....

What you think should i return the monitor or wait apple will add 5k support for it? (((

I have the Lae 2013 trashcan with the AMDD700, which will drive 5k monitors. The problem with this LG monitor is that it only has a single DisplayPort input, and since its an ultra-wide screen that technically is two 2560x1440 monitors, the setup we are seeking may be a stretch. The two 1080 HDMI won't give us what we want either. It appears if the LG monitor has two DisplayPorts, it should work. However, LG does say that a single DP port with THEIR 5k cable should support it.

Perhaps we wait for Catalina 10.15 and see. I am running 10.14 now.

I just purchased the same Vega 64 and ext thunderbolt 3 box for my Mac trash can. Will see if it works.

in the meantime I found that putting the LG monitor into PIP mode and running the ⅔ and ⅓ view mode gives u 3840x1440 for the ⅔ side and it’s decent enough and enough space on the right for a second laptop or computer.

How are you connected to the Mac? According to the Video support specs with USB-C to DisplayPort the native DisplayPort is supported.

Are you going direct usb-c to DisplayPort or are you using HDMI? And are you using any converters/dongles or straight cabling in-out?

I purchased Samsung C49RG90 49inches ultrawide 32:9 monitor too. I've been tried many attempts regarding cables. I used DP to USB-C at a first time to Mac mini 2018 with intel HD graphics; however it did not work for target resolution 5120x1440. So I assumed that will caused by cable either GPU issues. Therefore I maintained my 3rd party DP to USB-C cable (4k@60Hz) and switch device to Macbook pro 15 inches 2016 but it did not work at all. After that I purchased Moshi cable that supports Thunderbolt 3 to DP and I connected to the macbook and it did work for 5120x1440 with low resolution mode (60Hz). However, the tech specs of Mac mini 2018 that supports 1 5k monitor by Thunderbolt3.

I guess this should be matter of gpu or Macos issues not the cable. I wish this will be reported and resolved by Apple tech team. I'm still debating that I should compose eGPU to my system.

I was having the same problem with my Samsung C49RG9x + 2018 Mac mini, everything described already. The highest resolution it would go up to was 3840x1080, 100hz. I've tried all sorts of cables. I am about to try the expensive Moshi one Apple sells, then I give up.

If anyone is curious, I decided to update to the Catalina beta and unfortunately it actually gets worse from there. The 3840x1080 resolution is gone from Apple's default resolution list. Instead, you get "5120x1440" in at the top of the list. Select that or "Default for Display", and it actually sets your display to 2,560x720 then scales the UI down 50% to simulate that resolution. The result is a blurry mess. You have to use something like SwitchResX to get back to 3840x1080.

Bootcamp works without any issues. I also ran several 4k monitors (USBC to DP) prior to switching to this monitor on the integrated Intel graphics and performance was bad (due to the garbage integrated graphics) but had no functional issues driving the monitors. It's an OSX issue, not a hardware limitation.

If I can figure out how to do a EDID display override I will share it here.

Take a look on my post (currently it is the latest one there - I am now capable to confirm that eGPU works perfectly. Here is the link: https://discussions.apple.com/thread/250885574?answerId=251975225022#251975225022

Interesting timing, MoneySnap. I've been following this thread for a couple of weeks, since I got my Mac Mini and 49" Samsung and had similar troubles. Today I came in here and saw your solution, as I was just about to post almost the same thing!

I finally got 5K working on my Mac Mini and 49" Samsung C49RG90SSNXZA, with almost the same solution. I also picked up the Razer Core X Chroma, and I also put in a Sapphire Pulse card, though I went with the Radeon RX 5700 XT. Same as you, everything was essentially plug and play.

Nice crisp and clear picture. Expensive solution, though I will have other uses for the eGPU, and I think worth it overall in the end.

Yeah i think its a bug in the new OS, it is super daft:

See https://discussions.apple.com/thread/250737077

Re the Mac mini, I don’t know if its due to the onboard graphics chip specifically.. Is the Graphics on the MacBook Pro making the difference? i.e. with High Sierra on a 2018/20 Mac mini could it work?

Or is an eGPU the only option for the mini..

In any case apple really needs to get a patch sorted.

MacOS Big Sur Public beta supports this resolution natively on a 13" MBP with Intel Integrated graphics. Try it on your configuration and it may work.

In theory, your 2018 Mac mini can support up to 5120 x 2880 @ 60Hz for 5K 16:9 by connecting from one of the mini's four Thunderbolt 3 / USB-C ports to the DisplayPort port on monitor. I don't know how it would handle the 32:9 ultra-wide mode for this particular monitor.

I am hoping that the final 10.15 Catalina release will have a solution for this. I am able to see "5120x1440" in the most recent beta but it is not the best. Hopefully this will get addressed in the final release which is due to come out in the coming weeks.

I tested the 5.5 step also, the result is the same of the previous user. I think that with your macbook is the AMD chip that drive the monitor itself, but with the mini we are stuck with the Intel’s one.

A think you are just alarmed because it says low res, mine was like that too but it went away after a few restarts.

does it look sharper than before the tutorial? Now, if you now switch back to a a lower resolution the panel will remain 5120*1440 but UI upscaling will be what you have set to be. go to about this device -> system report -> graphic/display

And there is a intel version.