Brightness doesn't work with M1 macs

[synle]

Error

For internal display:

/Users/syle/git/display-dj/node_modules/electron/dist/Electron.app/Contents/Resources/brightness: failed to set brightness of display 0x1 (error -536870201)

For external displays:

More info here:

• Error: Failed to parse WindowServer's preferences kfix/ddcctl#92
• Wanted: access DDC on M1 (ARM) platform Macs kfix/ddcctl#86
  D: CGDisplay 3C535519-AEA6-40BB-8B3C-9960A75AD2F4 dispID(#2) (2560x1440 0°) 108.00 DPI D: CGDisplay B42D0653-90BD-4C09-8994-29942B522374 dispID(#3) (2560x1440 0°) 108.00 DPI I: found 2 external displays E: Failed to parse WindowServer's preferences! (/Library/Preferences/com.apple.windowserver.plist) I: polling EDID for #2 (ID 3 => (null)) E: Failed to poll display

Potential Solutions

• Use the osascript to set brightness - https://antman1p-30185.medium.com/macos-native-api-calls-in-electron-d297d9a960af
• https://github.com/waydabber/m1ddc

Working code for external display on m1 mac

./m1ddc get luminance

./m1ddc display list
./m1ddc set luminance 50

./m1ddc display 1 set luminance 100
./m1ddc display 2 set luminance 100

/Users/syle/git/display-dj/node_modules/electron/dist/Electron.app/Contents/Resources/m1ddc display 1 set luminance 100