New MacBook Air M1 and Super Ultrawide Monitor Support

Hi have an MBA M1 and trying to connect to my Acer ultra wide at 3440x1440

Max res i see is 2560x1080. Even when use Options to display other available resolutions the max I see is 2560x1440

Connection is using HDMI using Choetech USBc adapter

How can I get the 3440x1440 resolution? Should I be using a different cable? DisplayPort to Thunderbolt perhaps?

Th screen shot above clearly states (low resolution), if you have used this before, it's lack sharpness you expect out of the display. What's the point?

Of my MacBook Pro 15" 2018 which actually supports 5120x1440 through USB-C connection on the Dell U4919

Solution: Hold down the OPTION key before clicking on Scaled.

It depends on what adapter you use. I have an Acer Nitro XV340CK 34" 21:9 ultra-wide displaying at 3440x1440, 100Hz (144Hz only works if I change the width to 2560 strangely). The only way I have managed to achieve this is by using adapters that support HDMI 2.0. I have tried the official Apple AV multiport adapter (updated a couple years ago to support HDMI 2.0) and a cheap Plugable USB-C to HDMI 2.0 adapter I got from Amazon a while back. Both work flawlessly for the ultra-wide 1440p 100Hz.

My only gripe is that for some reason, the 900p HiDPI mode that was available on my old 15" MacBook Pro now doesn't work with the M1 chip Macs. Not sure why that is, but maybe that could be patched in a future software update.

Hope this info helps.

spk0 wrote:

As of Dec 7th 2020 the new M1 based macs do not support 5120x1440 resolution.

So what changed since the screenshot above from Nov 30th 2020 that clearly shows 5120x1440 as an option? I suggest you view that screenshot and perhaps revise your understanding.

Hey, I am in the same boat. I have a Macbook Air M1 and my Anker docks, who support 4k worked on Windows with my 3440x1440 iiyama-monitor. On Mac I only got a stretched screen.

Now I have this adapter:

https://www.amazon.de/gp/product/B08FWMWGTD/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

Now I have the right resolution, but the text is blurry as **** - No chance to get the text as sharp as on my Lenovo T470s (Intel HD620)

Currently I am very dissatisfied with this situation. My monitor is 2 months old and I can't really use it - Because I always see how good the image with my Windows-machine is :-(

Hi, was in the same boat at you. I have that adapter (similar one) and it could not output the max ultrawide res of my monitor, which is 3440x1440.

I purchased a TypeC to HDMI cable and was able to get full res. Maybe try getting one of those.

Something similar to this?

https://www.amazon.com/Adapter-QGeeM-Thunderbolt-Compatible-ChromeBook/dp/B073J9ZZY6/ref=sr_1_1_sspa?dchild=1&keywords=type+c+to+hdmi&qid=1608153300&sr=8-1-spons&psc=1&smid=A3TG6UNCSJC2TF&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyQ1UwUERHQjdBWllOJmVuY3J5cHRlZElkPUEwNjMwNTMzMTg0QllLUlRHRlpBWSZlbmNyeXB0ZWRBZElkPUEwNDQ3ODAxMjJIVVJaTTZMUEs4RCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

That is the way apple displays fonts sadly, i had a mac mini years and years back and was looking if they had changed that, but looking at your screen pictures, sadly they have not.

I send that mac mini back after 2 days, it seems mac-os still uses that horrible font rendering and doesn't support my 3440x1440 at 144HZ monitor. Windows 10 does of course even some crappy linux distro's do, but apple ; Nope.

I have a Spectre C35 with the ability for 3440 X 1440, However, I am only able to get 2560 X 1440. I did follow the instructions for holding the options key while clicking Scaled. This monitor works on a 2020 Macbook Pro (Intel). Is this a M1 specific issue and is there a resolution?

Thanks all I purchased a TypeC to HDMI cable and am now able to get full res 3440x1440 at 100hrz

The new Macs will support that resolution, but only at a 60 Hz frame rate.

I just purchased a LG 49WL95C-W 49-Inch Ultrawide and the max resolution I can get on my MBA M1 is 3840x1080 regardless of what type of connection used.

As of Dec 7th 2020 the new M1 based macs do not support 5120x1440 resolution.

Apple might add that support later.

Hello,

I also have a ultra wide 3440x1440. Did you ever get it to work?

The resolution isn't my problem. It's the blurriness I can't get rid of. See:

https://imgur.com/a/EzbnCup