Resolved Limited resolution choices for HP-Z27n display - MBP15"2015

[Thor774]

Hello

I have an HP Z27n 27" display and it connects to my Mac with a displayPort to mini-displayPort cable.

Before this Mac I had a MBP 13" from 2011. I had several resolution choices in El Capitan. For health reasons I was working on a resolution of 1600x900 and I had these other options: 1920x1080, 1360x768 and 1280x720 in addition to the default resolution for the display. Now that I have a MBP 15" from 2015 and El Capitan too I only get 3 video resolution choices for this monitor: 2560x1440, 1080p and 720p on both 60 and 50Hz.

How can I get other resolutions like the ones my previous Mac was giving me? I am specially missing the 1600x900 resolution that worked perfectly for my eyes on this screen.

Thanks a lot for your help.

 

[JTToft]

Try Alt-clicking the "Scaled" bullet in display preferences.

 

[Thor774]

Try Alt-clicking the "Scaled" bullet in display preferences.

That was an amazing piece of help! Thank you very much. It solved my issue in an instant.

 

[JTToft]

That was an amazing piece of help! Thank you very much. It solved my issue in an instant.

- Glad to hear it.

 

[brooc]

This is a pretty old thread but still comes up on Google as one of the first results.
I spent some time to get the highest resolution possible on my Mac running Big Sur.
What ended up working for me is using an HDMI cable (USB-C isn't recognized by the Mac at all) and setting the DisplayPort Mode to 1.2. This is done by going to the monitor's Main Menu -> Input Control -> DisplayPort Mode... -> DisplayPort 1.2.

After doing this I can simply use the "Default for display" option on my Mac or switch to the scaled option where the highest resolution matches that of the monitor