Connecting a 2018 15“ MacBook Pro to a 27“ 16:9 Dell or EIZO monitor selects 1080p as the default resolution. Both monitors natively support 2560x1440 but it doesn’t show up as an alternative on the MacBook. A 30” 16:10 HP monitor works fine and 2560x1600 is used automatically. It seems that the MacBook does not support 2560x1440. Is this correct?
Thanks
Willi
No that is not correct.
The moment you choose [√] Mirror Displays, your internal and external displays are set to a resolution BOTH displays can achieve at the same time. This limits the resolutions that can be chosen.
If you uncheck Mirror Displays, each display can realize its full potential.
NOTE: if using HDMI as your interface, this may also add limitations, as HDMI was designed for HD: 1920 by 1080p, and extending it is a minefield of problems.
No that is not correct.
The moment you choose [√] Mirror Displays, your internal and external displays are set to a resolution BOTH displays can achieve at the same time. This limits the resolutions that can be chosen.
If you uncheck Mirror Displays, each display can realize its full potential.
NOTE: if using HDMI as your interface, this may also add limitations, as HDMI was designed for HD: 1920 by 1080p, and extending it is a minefield of problems.
But I tried both, mirrored and not mirrored and the MacBook always defaults to 1080p for the external monitor and 2560x1440 is not an option. But you’re right, HDMI is a minefield of problems and since both monitors also have a Display Port I’m going to try a USB-C to Display Port adapter.
Thanks
Willi
15“ MacBook Pro and 16:9 QHD resolution
