Macbook Air M3 External Monitor Wide Resolution

shaharaj Said:

"Macbook Air M3 External Monitor Wide Resolution: Hi everyone, I can't get my Macbook Air M3 to extend its display to my external monitor's native resolution at 2560x1080 and only exports at 1920x1080. [...]I can't edit my system information. Are there any other workarounds?"

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Boot in Safe Mode:

In Safe Mode, Login Items do not run at login, certain preferences are set aside, and damaged system files are then reset. So, once booted in to Safe Mode, wait 30 seconds, and then boot up normally, attempting this once more. For instructions, go here: How to Use safe Mode on your Mac - Apple Support

Any Difference?

shaharaj Said:

"Macbook Air M3 External Monitor Wide Resolution: I still can't do it. By edit, do you mean directly editing System Information? If so, I can't seem to do it. Or do you mean going to system settings? On system settings, my preferred resolution isn't available at all“

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Changing the Resolution:

By “edit”, I’m referring to the face than that you can’t edit any information that thread. But that doesn’t seem to be the case here.

I am referring to booting into Safe Mode to see if that fixes some issues, allowing you more choices. But, if you do not see the declared resolution afterwards, then there is officially no way to change that.

I'm having the same issue and having been searching endlessly to try to solve. I was issued an M3 Air as a work laptop and cannot use my Dell Ultrawide (which works fine on my personal MBP) with my Air plug and play. I have tried ordering a Displayport to USBC cable instead of using HDMI, still no 2560x1080.

I can't even unlock this resolution using BetterDisplay. Apple claims the Air can support one 6K monitor, or two with the lid closed. Why doesn't it support one ultrawide 4K monitor resolution?

Anyone have a solve for this?