Anyone know how to disable macOS auto brightness using defaults from the commandline?

[lgarron]

I found recently that "Automatically adjust brightness" was enabled on my computer for some reason. I thought I'd turned it off, but it's possible I missed it because it's not automated using my dotfiles.

I've turned it off manually now, but I'd like to automate it using the macOS defaults command. Unfortunately, this seems gnarlier than usual. I've tried using plistwatch and searching through the plist contents (using rg --binary and the only thing I've found that looks relevant is a an OS-wide (not user-specific) preference in /Library/Preferences/com.apple.prodisplaylibrary.plist:

Unfortunately, that field doesn't seem to update when I toggle the system setting and I'm at a loss. Searching on the internet hasn't turned up anything useful for me.

This is not a problem I expect BetterDisplay to solve, but I figure that some other users might have skills to help solve this. Anyone know how to manage this setting from the commandline?

[waydabber]

You can try this:

betterdisplaycli set -n=DISPLAYNAME -autoBrightness=off

https://github.com/waydabber/BetterDisplay/wiki/Integration-features,-CLI

Alternatively you can probably interact with this by creating a custom preset and altering the disableAutoBrightness setting, but for that you need a programmatic approach and use undocumented APIs. Not sure about the effectiveness of directly editing the plist you mentioned (did not try that).

[lgarron]

Aha! Thanks so much, it took some fiddling but that works perfectly. 🤩

betterdisplaycli set --name="Built-in Display" --autoBrightness=off