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plochner Author

Level 1

79 points

Multi Monitor and Sierra Forgets Window Positions after Wake Up From Sleep

I have a laptop screen and an external monitor. Both are open during my workday. I keep my email and Messages app on my laptop screen and use the 27" monitor as my primary display for everything else. It's basically a multi-monitor setup except my laptop screen is the second monitor.

About once a day, when I leave my Macbook Pro Retina for 30 minutes and it goes to sleep, I wake it up from sleep and all of my windows are moved to my 27" display. I have to drag my email and Messages app back over to the laptop display.

Unless I physically disconnected my monitor, this absolutely never happened in El Capitan or Yosemite and even Mavericks. Every time I work up my Macbook from sleep it would remember where the windows need to be.

Why is this happening with Sierra?

Posted on Nov 1, 2016 2:23 PM

Top-ranking reply

NicJS

Level 1

9 points

Posted on Sep 26, 2017 11:13 AM

I had this problem this morning.

First you need to open Mission Control and add a new "Spaces" now just called a "Desktops" to both screens. You don't need to use these new Desktops, they just need to be there. With two monitors you end up with "Desktop 1" and "Desktop 2" on the first monitor and "Desktop 3" and Desktop 4" on the second monitor.

Right click the Dock Icon for that application you want to launch in the second screen and choose Option. Now you can assign the Application to always open on the second Desktop.

Without having multiple Desktops established, this option isn't available. It looks like a bug to me.

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