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User profile for user: jayant180
jayant180 Author
User level: Level 1
8 points

External display on imac - changing resolution

Hi - I have a 27" 5K 2019 iMac to which I have now connected a Samsung monitor - S24E450B 24-Inch Monitor (16:9) - as an external display. The optimal resolution for this monitor is 1920 x 1080, but I am unable to get the monitor to change to this setting. When I use the iMac's System Preferences -> Displays for the external display, it only shows 2 elections under the "Scaled" bullet - (i) 1080 x 1920; and (ii) 900 x 1600.

Any suggestions on how I can get the Samsung display to its optimal resolution of 1920 x 1080?

iMac 27″, macOS 10.15

Posted on Jun 20, 2020 8:15 AM

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User profile for user: BDAqua
BDAqua
User level: Level 10
240,437 points

Posted on Jun 20, 2020 8:34 AM

Your screen is Rotated 90° to Portrait mode, 1080*1920 is 1920*1080 but rotated.

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External display on imac - changing resolution

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