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Since I upgraded to High Sierra, my 2-display layout gets reset to side-by-side every time I reboot, when instead it should be vertical to match the physical layout of my monitors.

While potentially unrelated, High Sierra also lost my Login Items after the upgrade.

I'm using a MacBook Pro (15-inch, 2017), running 10.13.

How can I get High Sierra to remember my display layout?

  • What model Mac are you using? – Monomeeth Oct 13 '17 at 9:06
  • Good point. Added to the question. – Gabriele Cirulli Oct 13 '17 at 9:19
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Your MBP uses Non-Volatile Random-Access Memory (NVRAM) to store various settings. It may be worth resetting this.

To reset the NVRAM on all Late-2016 and 2017 MacBook Pro models (with and without Touch Bar) follow these steps:

  1. Shut down your MBP. Yes, a full shut down, not just logging out.
  2. Press the power button and then immediately press the commandoptionpr keys.
  3. Keep these keys pressed down for at least 20 seconds!
  4. Let go of the keys and let your MBP reboot normally.

Note 1: When you log back in you may need to readjust some of your system preferences (e.g. speaker volume, screen resolution, startup disk selection, time zone information, etc).

Note 2: If your Mac is using a firmware password, you will need to disable the firmware password before resetting NVRAM.

  • By firmware password do you mean the one I'm asked for before boot due to having FileVault enabled? – Gabriele Cirulli Oct 13 '17 at 9:44
  • Refer to How to set a firmware password on your Mac. – Monomeeth Oct 13 '17 at 10:01
  • Thanks. I had this issue in Mojave. Though since I'm running a Hackintosh (custom PC) I ended up having to login into single-user mode, then running sudo nvram -c to clear it. – Justin Fortier Nov 2 '18 at 13:01
  • Didn't know that zapping the PRAM was still a thing! Haven't seen that key combination in 20 years. – Kaji Apr 1 at 16:39
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    @Kaji Yep, that key combination has survived many iterations of the Macintosh operating system (although it's now referred to as NVRAM as opposed to PRAM). :) – Monomeeth Apr 1 at 22:53

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