Samsung Odyssey G9 Mac M1 5120×1440

This is how to get 5120×1440 on Samsung Odyssey G9 on Mac M1.

I have a 16GB 2020 Mac mini M1 with the Samsung Odyssey G9 ultra-wide 49″ monitor. I bought this USB-C to DisplayPort cable to get the max resolution of 5120×1440 but I had to jump through a few hoops to get there. Here’s how to do it.

These are the simple steps with macOS Big Sur 11.1:

1. The G9 must be set 60Hz, at least initially (Adaptive Sync also needs to be disabled, but I believe changing to 60Hz does this automatically). So yes, that means you cannot use your monitor at 240Hz. So, boo. I don’t use it for gaming, but rather for productivity/dev so I don’t really care about it. If you do, then keep 240Hz and you’ll have to also live with the reduced 3840×1080 resolution. I’ve been able to get it to work with 120Hz but initially set it to 60Hz.

2. Go to System Preferences > Displays and while holding down the OPTION/ALT key, click “Scaled”.

3. Now select the 5120×1440 resolution. Boom.

This is the way.

 


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11 Replies to "Samsung Odyssey G9 Mac M1 5120x1440"

  • André S.
    Mar 22, 2021 (4:54 am)
    Reply

    Dear Chris,

    Interesting article.

    Is the eye-screen distance the same wherever you look on the screen?
    This is an important issue for me when choosing a curved screen (progressive glasses).

    Regards,
    André,

    • Chris Duke
      Mar 22, 2021 (8:11 am)
      Reply

      It is the most curved monitor you can buy (still, I believe) but the ends of the screen are still definitely further away than the center. I wear reading glasses and it’s perfectly acceptable for me.

  • André S.
    Mar 22, 2021 (8:23 am)
    Reply

    Many thanks for your feedback :-)

    Regards,
    André

  • Stefano
    Jan 27, 2022 (4:18 am)
    Reply

    Dear Chris,

    Thank you for this article!

    Do you know if your instructions could be also applied to a MacBook Air M1?

    Kind regards,
    Stefano

  • Zeeshan Jafry
    Jun 18, 2022 (8:11 am)
    Reply

    Thanks. I still dont get the resolution higher than 3840×1080 even if i hold down the option key. Could it be due to the reason that i am using HDMI instead of d dig display port

  • TurboBMR
    Sep 18, 2023 (8:55 pm)
    Reply

    Yes, you need a thunderbolt to display port 1.4 cable.

    • Pete Williams
      Nov 30, 2024 (1:26 am)
      Reply

      Hi Chris – awesome article thank you! I see that the Mac Mini now has only an HDMI port so would this solution work and what cable would I need? Apologies if this ranks as “Stupid question” territory! Many thanks.

      • Chris Duke
        Nov 30, 2024 (9:06 am)
        Reply

        The new M4 Mac minis have a HDMI as well as USB-C so you can use either. If you go the HDMI route, make sure you get a quality HDMI 2.1 cable that supports the resolution you need.

  • Fred
    Oct 23, 2024 (9:20 am)
    Reply

    Hello Chris and thank you for your free information. I am a new to Mac guy (PC convert). A couple of questions actually: 1. I’ve just ordered them Mac mini M2 pro, which I believe is sequoia os, will this function the same? 2. Is the scaling (the proper pixel ratio so they remain in proper proportion) uniform across the curve and does it fill the entire screen, edge to edge? Thank you again for your time.

    • Chris Duke
      Oct 23, 2024 (9:26 am)
      Reply

      Hey Fred! I no longer have this monitor as of earlier this year because the screen stopped working, even under power (out of warranty and their local repair vendor would have charged more than the value of the monitor to come out and fix it!) I replaced it with a 32″ monitor. But, to answer your questions: 1) Yes, nothing has changed. 2) Yes, it’s uniform and fills the entire screen edge to edge!

      • Chris Duke
        Oct 23, 2024 (9:28 am)
        Reply

        BTW the latest computer I used it with was a M2 MacBook Pro (upgraded the M1 Mini) and it worked just the same.


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