MacBook Air clamshell mode: Can't set 1920x1080@60Hz

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Level 1

4 points

MacBook Air clamshell mode: Can't set 1920x1080@60Hz

Hi! I've been trying to use the clamshell mode for my MacBook Air (13', A1466) and my monitor (Lenovo ThinkVision T24i-2L Display) but it shows me a window with the message "Input signal out of range, please change to 1920x1080@60Hz" but the problem is that I don't have an option to change to 1920x1080 and 60Hz. What can I do?

P.S. I tried every option I could from Set sleep and wake settings for your Mac - Apple Support

MacBook Air 13″, macOS 12.7

Posted on May 26, 2026 11:56 AM

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Answer 1

May 27, 2026 4:36 AM in response to whimsnia

Your screenshot is showing that the internal display is selected, not the Lenovo.

Select the Lenovo display, and see what options you are given for resolution.

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Answer 2

Kurt Lang

Level 9

72,501 points

May 26, 2026 12:06 PM in response to whimsnia

How are you connecting the Lenevo? If you're using HDMI, that may be why. Try using the DisplayPort connector with the monitor.

There are a lot of Macs made between 2012 and 2017, all with 13" screens that have the A1466 designation. So I can't guess what kind of outputs you have.

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Answer 3

Kurt Lang

Level 9

72,501 points

May 26, 2026 12:42 PM in response to whimsnia

The two 2017 models support up to 2560x1600 for an external monitor. The only mention of refresh rates I could find is your MacBook Air will support up to 60Hz over a Thunderbolt connection. Meaning, HDMI and DisplayPort won't do 60Hz.

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Answer 4

whimsnia Author

Level 1

4 points

May 26, 2026 12:10 PM in response to Kurt Lang

it's 2017 one with 8 ram. Im already using displayport connector, but it fits a little loose. Also, on other profiles it works completely fine, just mine won't work.

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