Why 5120x1440 Doesn't Work with Apple M1

Thank you for your reply and assistance.

It's not the cable as I swapped out the Mini for my Intel 16" MBP and there were no Internet speed reductions.

Sadly, I just returned the Mini to Apple. The Internet speed issues were not the only problem. When the Mini rebooted there was a 100% CPU load that lasted over five minutes and slowed everything to a crawl.

It appears to me, that despite the improvements of the M1 chip, the Mini is still substandard when comparing it to the 16" MBP with 4x the memory. I think it's better to wait until the Mini is eventually refreshed and a more powerful chip with more ram options is available.

This is the same thing mine is doing now. I've tried the Cable Matters usb-c -> Displayport pigtail thing (which won't even wake the monitor up) and some other generic usb-c->dp cable, which claims 8k support (lmao) and I can get 5120x1440, although the font anti-aliasing goes away, and the scaling looks like garbage, plus what's happening in that screenshot, the input indicator popup just blinks on and off the whole time.

Does anyone know of a cable that works properly, or are the only people who are able to use their new M1 mini those who are willing to spend another 20% of the cost of the entire computer on a fancy dock?

Why couldn't they have just put a displayport plug on the back of the M1 mini is beyond me. I'm willing to try one more cable, but if they can't even get this thing to talk to an ultrawide monitor that's been out for years now, I'm just going to have to deal with Lightroom taking 6 seconds to open instead of 4 and keep using my windows machine.

Atrocious.

I'm having the same issue except I'm running BigSur 11.2.3. I have the recommended DP1.4 cable that was shown in that youtube video, and I even tried EasyRes to see if that would work. Somethings up with the updates and I really hope Apple takes care of this. I have a 5120x1440 @ 120hz Viotek 49" monitor and I'm out of ideas. If anyone has any other ideas or tips/tricks/fixes that they know of please let me know.

Folks, stop saying "it's working with this cable". It doesn't. You might be able to get a picture after some fooling around, but there is no HiDPI setting that's even remotely nice looking, and your fonts are always going to be either too small to read and blocky, or overblown and zoomed in to the point where the letters are quarter-inch tall.

I returned my mac mini, I'm over it.

Which Screen do you tried ?

Only since you can't get it working , don't imply other can't either.

It is working like a charm here.

We have never claimed that it is running at HiDPI.

HiDPI is unequal to Ultrawide.

I just told that it is working with 5120x1440 and the fonts are crisp here.

Not as Crisp as on a retina screen (HiDPI) ofcourse where you can run it @ 200%.

To make that work properly you need a higher (vertical) resolution then 1440 px or you have to live with 720px estate in height. But that Screen would cost a lot more than a ultra wide ;)

eg LG Ultrafine has a resolution of 5120 x 2880

That would give you a screen estate of 1920x1080 @ 200%.

So I would need at least 3 of them to get more estate (dual head suxx since you would have always a bezel in the middle of the view)

5720 x 2880 would be lovely :) and then in OLED Quality, THAT would be crisp and enough estate @ 200%

I wonder how much this would (will) cost.

As shown in my previous screenshots , it is set to 5120x1440 @ 100Hz.

I previously were using they screen with Windows either, but there I had to scale it to 150% to be able to see anything. Weird twisted world. How do you switched this page here to dark mode ?

Argh... my only monitor is a 5120x1440 and I have a Mac Mini M1 coming .... I wanted this to work... if it does not I'll have to return it... this is annoying.

I just cancelled my M1 Macbook as this is a deal-breaker for me.

Following the thread and hope there will be a software solution so I can place the order again.

We don't think you can on a Ultra Widescreen monitor such as the 46" Samsung (and other brands)

We are in the process of finding out as these M1 devices slowly make it into the hands of consumers.

This is great news. Thank you for sharing.

I don't have a M1 yet but I have successfully ran 5120x1440 on both my Macbook Pro and 12" MacBook: https://zurassic.medium.com/how-to-enable-5120x1440-on-mac-cd780c41a108