Retain External Monitor Resolution

[ParagJain]

Hello -

This might already be answered; I could not find it. I recently got a new external monitor to connect to my mabcook pro.
I am setting the external monitor's resolution to "Scaled - 2560 x 1440 @ 60 Hz"; Monitor is connected via thunderbolt port.

My challenge is; Every time I restart MacBook or wake up from sleep, the external monitor's resolution is automatically changed to 1920 x 1080.

I am using the book in clamshell mode - Is there a setting I am missing for MacBook to remember the external monitor's resolution.

thanks for the help.

cheers,

 

[chscag]

No details. What monitor, make and model? Which MacBook, model and year?

 

[ParagJain]

Ah, sorry -

LG 24UD58 Monitor, MacBook Pro 2015 Retina display - 13inch model.

 

[Stephen.R]

NVRAM is used for some display/resolution settings, possibly it needs a reset. Have a look at https://support.apple.com/en-us/HT204063

 

[ParagJain]

NVRAM is used for some display/resolution settings, possibly it needs a reset. Have a look at https://support.apple.com/en-us/HT204063

Thanks - Let me try this and hope it works..cheers

 

[chscag]

It appears that the monitor is defaulting to its full HD setting which is 1920 x 1080. Supposedly it can do 4K UHD 3860 x 2140. According to the Mactracker specs for your MacBook Pro, the scaled resolution you chose is not supported. Maybe that's why it's defaulting to the HD resolution? Let us know if the nvram reset works.

 

[ParagJain]

It appears that the monitor is defaulting to its full HD setting which is 1920 x 1080. Supposedly it can do 4K UHD 3860 x 2140. According to the Mactracker specs for your MacBook Pro, the scaled resolution you chose is not supported. Maybe that's why it's defaulting to the HD resolution? Let us know if the nvram reset works.

NVRAM reset didn't work - I think;

Now when I restart the MacBook, the external monitor defaults to 1080 resolution. However, waking up from sleep retains 2560 x 1440 resolution.

To restart the MacBook, Of-course I need to keep the book's lid open to access the power button. At that point, its thinking I've 2 displays - 1 inbuilt and 1 external.

When waking up from sleep - the lid is always closed as I use the bluetooth accessories to wake up. Don't know if this really is the solution or an issue but, for now I will not restart the MacBook unless really required.

thanks again for all the suggestions.