How to define which display is "screen 1" and which "screen 2"

[nauta]

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Using Amethyst v0.15.4 (91) on MacOS Big Sur, and working with an external monitor.

With most external monitors, throwing windows (⇧⌃⌥ + 1/2) to "Screen 1" → internal macbook screen and to "Screen 2" → external monitor. But with some other external monitors (office with flexible workspaces), these are switched: "Screen 1" → external monitor and "Screen 2" → internal macbook screen.

Is there some way I can define/change these screen settings, and set "Screen 1" to always default to my internal screen? I already tried dragging the menu bar in the Display : Arrangement preferences, but that didn't work.

[CourteousCoder]

I think it hooks into macOS's Display Preferences. I think this is also the case for setting the "main" screen. I was able to change the main screen by going to System Preferences -> Displays -> Arrangement and then drag-and-dropping the "title bar" from one display to another. The display with the title bar seems to be the "main" display with meta+M.

Because of this observation, I think Amethyst is determining which display is "Screen 1" (or "Screen 2", etc) from the system's display index. I only have one external display, so I cannot confirm my hypothesis. If my hypothesis is correct, then perhaps unplugging the displays, and reconnecting them in the correct order (or finding a way to programmatically re-index the displays at the OS-level) might help you.

If you find the solution, please share it because I am sure others are curious too.

[LoneFireBlossom]

I have the same question. I use iPad sidecar:

And internal macbook screen is "monitor 1":

but when I use Amethyst shortcut "throw focused window to screen 1", window on internal macbook screen will be moved to iPad sidecar screen. When I use "throw focused window to screen 2", window on iPad sidecar screen will be moved to internal macbook screen.

Monterey 12.3 Beta (21E5227a)

[ianyh]

Screens are sorted horizontally on the x-axis. The actual labels are uuids and do not lend themselves well to shortcuts.