MacBook M3 cannot set recommended resolution for LG

Question

onno96 Author

Level 1

4 points

MacBook M3 cannot set recommended resolution for LG

I am not able to connect my LG Widescreen to a Macbook M3.

The message om the wide screen states the following:

The screen is currently not set to the recommended resolution

Configure the PC resolution to 2560x1080/60Hz

Current resolution 2560x1080/75Hz

Recommended resolution 2560x1080/60Hz

The screen settings on my Macbook does not (select all resolutions) does not have 2560x1080. When I connected a Windows PC to the screen it all worked just fine

What should I do?

Posted on Nov 23, 2025 8:51 AM

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Answer 1

Top-ranking reply

azaksalmarzur28

Level 4

1,224 points

Dec 9, 2025 6:48 PM in response to onno96

Enable “Show All Resolutions” (but do it the advancedway)

The basic “Show all resolutions” toggle is not enough.

You need the hidden “Option-click trick”.

Steps:

Open System Settings → Displays
Hold Option (⌥) on your keyboard
While holding Option, click “Show All Resolutions”
Now click the drop-down for your LG monitor
A second set of resolutions will appear, including:

- 2560 × 1080 (60 Hz)
- 2560 × 1080 (low resolution)
- 2560 × 1080 HiDPI (if available)

This works on many LG 21:9 ultrawides.

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