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Why 5120x1440 Doesn't Work with Apple M1

Hi


Why the resolution 5120x1440 Doesn't work with the New Apple M1 ...


You indicate on the website '' One display with up to 6K resolution at 60Hz connected via Thunderbolt and one display with up to 4K resolution at 60Hz connected via HDMI 2.0 ''


But I can only use the resolution 3840 x 1080 not my native resolution 5120 x 1440.


Can I have a explication please ?


Thanks in advance


Mac mini 2018 or later

Posted on Nov 17, 2020 11:42 AM

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Question marked as Best reply

Posted on Nov 20, 2020 5:59 AM

I have a SAMSUNG 49” CRG9, which supports 5120 x 1440 @ 120hz. It works perfectly with on MacBook Air 2020. However, on the new Mac Mini M1 I had a hard time getting 5120x1440 @ 120hz. At first the M1 wouldn’t work with the DisplayPort to USB-C cable, even after updating to Big Sur 11.0.1. I assuming it’s because the usb-c cable I had only supports DP 1.3. The HDMI cable worked but not at 5120 x 1440.  


I ordered a Maxonar DisplayPort to USB-C cable from Amazon, which supports DP 1.4. I was able to connect the monitor with the new USB-C cable, however, max resolution I was able to get was 3840 x 1080 @ 60hz. I had to change the refresh rate setting on my monitor from 120hz to 60hz and turn off Freesync. That is when I was finally able to get 5120 x 1440 (low resolution). 


I am still having a problem where the system won’t detect the monitor when waking up from sleep. Currently, I have to unplug and replug the USB-C for the monitor to connect. It might just be a problem with the DisplayPort drivers or Big Sur. I am going to try order different DP 1.4 cables to see if that fixes the problem.


https://www.amazon.com/gp/product/B08B3XNZGS/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1


221 replies

Why 5120x1440 Doesn't Work with Apple M1

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