m1ddc ☆
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Description:
Control external displays (USB-C/DisplayPort Alt Mode) using DDC/CI on M1 Macs
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: display ddc-ci brightness macos apple-silicon cli
Install: brew install m1ddc
About:
M1ddc is a command-line utility designed to bypass macOS limitations on M1/M2/M3 chips that prevent native DDC/CI control over USB-C and DisplayPort connections. It enables direct communication with external monitors to adjust hardware settings like brightness, volume, and input source. This tool is essential for users seeking full control over their display peripherals on modern Apple Silicon hardware.
Key Features:
  • Bypasses Apple Silicon DDC/CI restrictions
  • Adjusts monitor brightness and volume via CLI
  • Supports USB-C and DisplayPort Alt Mode
  • Lightweight and scriptable
Use Cases:
  • Automating external display brightness adjustments on M1/M2/M3 Macs
  • Controlling monitor settings via keyboard shortcuts or scripts
  • Integrating display control into productivity workflows
Alternatives:
  • MonitorControl – GUI-based alternative with menu bar integration; M1ddc is CLI-focused and more lightweight
  • ddcutil – Linux-focused DDC/CI tool; M1ddc is specifically optimized for Apple Silicon macOS compatibility
Version History
Detected Version Rev Change Commit
Sep 15, 2025 12:55am 0 VERSION_BUMP ae878468
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