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March 23rd, 2025 20:42

MacBook Pro 15, Dell monitor, Acer monitor

Have a MacBook Pro 15" and have had two monitors attached for years. One is an Acer, and the other a Dell. I keep the laptop closed and use the monitors as extended displays all the time (the Acer is probably set as the main display). The only change I made recently is to add MS Teams as Skype is going away. Now, unless I have the laptop cracked open about two inches, the Dell monitor won't display and gives me a message about the display settings. "The current input timing is not supported by the monitor display. Please change your input timing to 1920 x 1080, 60Hz or any other monitor listed timing as per the monitor specifications.'

I can't set the display setting for the Dell to those values unless the laptop is open; otherwise it shows me fewer selections. I tried resetting the Dell monitor to no avail and unplugged the monitor and plugged it back in. There are no updates for the display drivers and my Mac is up to date.

This post was created from this comment on different post

Community Manager

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56.8K Posts

March 23rd, 2025 20:45

* You replied to a 3 year old S2421HGF thread. Are you also using the S2421HGF?
* List the MacBook Pro video out ports
* List the Acer monitor video in ports

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6 Posts

March 25th, 2025 22:47

Hi, Chris, 

No, I have a S2421HF, but I could not figure out how to start a new thread. I'll figure that out so you can ignore this.

Thanks.

Community Manager

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56.8K Posts

March 26th, 2025 14:20

@JudyMacDell​ No worries! I see your other thread!

(edited)

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