Samsung Odyssey Neo G9 57" monitor with Macbook Pro M1 (2021)

The Samsung G9 57" requires HDMI 2.1 for the full resolution while using a Mac. You will need a mac with an M2 Chip or better. That being said, even if you do have an M2 or better, MacOS currently does not scale well at that resolution and everything will be extremely tiny and hard to read at full resolution until apple fixes it.

cables 'shipped in the box' are notorious for being ":lowest bidder" cables. Just good enough to keep you from returning the product to the store the day you get it.

HDMI resolutions above 4K REQUIRE a certified ULTRA cable. Nothing less will do the job on a Mac.

The Mac checks for errors in transmission, and more recent MacOS checks more aggressively.

Ryan3587 wrote:

The display's resolution is 7680 x 2160 and that is what is showing under the display settings. If I change it to default of 3840 x 1080 (Default), it just increases the size of the text and maybe clears it up just a tad, but then I lose all that glorious space.

What am I missing here?

There is an inherent tradeoff between

• The physical size of a display
• The physical size of text on a display
• The amount of text you can cram onto a display, or workspace (what you call "that glorious space")

The Mac probably does not know the physical size of your display, and assumes that the high resolution implies a high-PPI display that you would want to run in a Retina scaling mode.

• 24" 1920x1080 monitor => 91.8 PPI
• 27" 2560x1440 monitor => 108.8 PPI
• 27" 3840x2160 monitor => 163.1 PPI
• 27" 5120x2880 monitor => 217.6 PPI

There's a reason why commercial book publishers don't print all books in 2- and 3-point fonts – even though they can. Likewise, there's a reason why Retina "UI looks like 2560x1440" mode is a good one to use for a 27" display. Your vision is sensitive to physical size even when your monitor is capable of displaying a huge number of pixels.

In your case, your monitor has a very high pixel count (7680x2160 – as much as two UHD 4K monitors), but is big enough that it only has about 140 PPI. In Retina "like 3840x1080" mode, the Mac and monitor will physically size text "as if" you were running in native mode on a monitor with only 70 PPI. That's probably going to result in text being uncomfortably large.

I would think that given the physical size (57") and resolution (7840x2160) of your monitor, Retina "UI looks like 5120x1440 mode would be a useful setting. That would give you text of about the same size as on a 24" 1080p monitor, with the workspace of two 27" 2560x1440 pixel displays.

I don't know if the system will offer you a Retina 5120x1440 mode – since that would imply an internal drawing canvas with a resolution of 10240x2880 pixels (exceeding the Mac's specified resolution limits). But if you are using two cables to drive two halves of the same display, in such a way that the Mac thinks it is two displays, it might let you use Retina "2560 x 1440" (not "2560 x 1440 (low resolution)") mode for each half.

you can't hit that 7680 x 2160 resolution properly with both cables coming from ONE USB cable on the computer to the Dock. USB does not have enough bandwidth, so one half will drop in resolution or color fidelity.

That high a resolution requires a ThunderBolt port (which the display does not accept) or two cables from two different ports on your MacBook Pro.

maurits160 wrote:

NextCspr is it correct that you managed to achieve 7680 x 2160 resolution by the use of the ”Hyper Drive Dual 4K HDMI 10-in-1 USB-C Hub connected to the correct usb-c port?

The key is to use TWO ports out of the Mac, to support what the Mac sees as two displays side-by-side. That Dock can NOT support Two half-displays on a Mac, because it is a USB-C Dock, good for only ONE display up to around 4K resolution best case.

There is NO MAGIC in that particular Dock.

If you used a genuine Thunderbolt port, Cable, and Dock, that might be able to support both half-displays on one genuine ThunderBolt port out of the Mac.

For M2 or later Macs, HDMI 2.1 for 8K at 60 Hz is DIRECTLY supported, so an 8K display width can be supported directly over one cable, provided it is a DIRECT connection, No adapters or Docks intervening.

That should include refresh rates up to 60 Hz and nominal 4320 height. Since this display is only half that tall, some higher refresh rates MAY be possible.

Source:

Connect to HDMI from your Mac - Apple Support

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PLEASE APPLE address this issue in your OS so proper support at very high resolution so we can scale fonts etc and still keep high resolution

Although graphics are generally displayed at full resolution, in most cases the TEXT (only) on large display tends to be unreadably small without Scaling. You use the Displays Preferences/Settings pane to control TEXT Scaling:

...

14" M3 Max MB Pro with 16-core CPU, 40-core GPU, 16-core Neural Engine.

I am using a 2-year old USB C to DisplayPort 4K@60Hz Cable from Amazon and I can achieve full 7680 x 2160 at 60 Hertz. I run at 6016 x 1692 which is comfortable for me for productivity.

Amazon USB-C to DP Cable: (WORKS for 8K @ 60 Hz) https://www.amazon.com/gp/product/B089N461TC/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I also purchased a Cable Matters Braided 48 Gbps Ultra HD 8K HDMI cable and have tried the Samsung HDMI cable. Both produce unacceptable, need I say horrendous, results. Resolution changes (lowers) when the monitor wakes from sleep, waking from sleep takes close to a minute on my 57" Odyssey and when I tried it on my friend's 57" Odyssey (he got it about 3 months after me), the monitor will not even wake from sleep even though the MacBook is awake. Even worse, when connected via HDMI, I have experienced the following problems:

1) Blurring of anything on the screen - see attache photo - looks like wet paint that got wiped with a rag

2) Full screen of snow in which you can see all 8 panels

3) Black line from top to bottom on right side

4) Doesn't really sleep - continually wakes up every 30 minutes or so, looks at the ports and then says it can't find a source and goes back to sleep. Screen lights up twice in the process first with a message in the upper left hand corner and then with one in the center. End result, monitor goes back to sleep.

Amazon Cable Matters HDMI Cable: (DO NOT BUY - DOESN'T WORK) https://www.amazon.com/gp/product/B07FDRRHDK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

[Edited by Moderator]