External Keyboard Brightness Control Not Working on All Monitors

[bigplayer-ai]

Issue: External Keyboard Brightness Control Not Working on All Monitors

Pre-Submission Checklist

• Checked for existing issues
• Reviewed the wiki
• Updated to the latest MonitorControl version

Bug Description

Using the external keyboard's Control + Pause shortcut fails to adjust the brightness on all connected monitors.

Shortcut Keys:

• Increase Brightness: Control/Fn + PAUSE (F14)
• Decrease Brightness: Control/Fn + SCRLK (F15)

Reproduction Steps

1. Attempt to adjust brightness with the external keyboard using the above shortcuts.
2. Only the MacBook Pro's native screen responds; external monitors remain unaffected.

Expected Outcome

All monitors should respond to brightness adjustment shortcuts.

System Information

• macOS: Sonoma 14.4
• Mac Model: MacBook Pro 16" 2021 M1 Pro
• MonitorControl Version: 4.2.0
• Monitors: One external, one internal
• Apple Silicon: Yes