MultiDisplayVCP Server v2.0.0

MultiDisplayVCP Server v2.0 is a complete architectural evolution, delivering cross-platform DDC/CI monitor control across Windows, Linux, and macOS, paired with dual-mode high-performance networking.

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Key Highlights & Features

• Cross-Platform Daemons & Installers:
  • Windows: Modernized WinForms tray application with an Inno Setup installer (.exe) and portable archive (.zip).
  • Linux (x64): Headless daemon with automated systemd installer (install.sh) supporting kernel I2C / ddcutil.
  • macOS (Apple Silicon & Intel): Headless daemon with automated LaunchAgent installer (install.sh) supporting ddcctl.
• Dual-Mode Networking:
  • MagicOnion gRPC (HTTP/2): Zero-allocation, high-throughput protocol designed for Macro Deck 3 clients.
  • Raw TCP Socket: Retains 100% backward compatibility for Macro Deck 2 and enables open integration for third-party tools (Stream Deck, Bitfocus Companion, Home Assistant).
• HMAC-SHA256 Challenge Authentication: Sliding timestamp validation prevents replay attacks.

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Client Compatibility

Client	Protocol	Compatibility
Macro Deck 3 Client (v3.0.0+)	MagicOnion gRPC (HTTP/2) + TCP fallback	Full Support
Macro Deck 2 Client (v2.0.0)	Raw TCP socket	Full Support
Custom / Stream Deck / Companion	Raw TCP socket or gRPC	Full Support

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Quick Start / Installation

Windows

• Recommended Setup: Download and run MultiDisplayVCPServer_Windows_v2.0.0_Setup.exe.
• Portable: Download and extract MultiDisplayVCPServer_Windows_v2.0.0.zip, then launch MultiDisplayVCPServer.exe.

Linux (x64)

1. Install prerequisites:
   sudo apt install ddcutil i2c-tools && sudo modprobe i2c-dev
2. Extract archive:
   tar -xzf MultiDisplayVCPServer_Linux_x64_v2.0.0.tar.gz
3. Run the installer (installs binary and enables systemd service):
   sudo ./install.sh

macOS (Apple Silicon & Intel)

1. Install prerequisites:
   brew install ddcctl
2. Extract archive:
   tar -xzf MultiDisplayVCPServer_macOS_<arch>_v2.0.0.tar.gz
3. Run the installer (installs binary and enables background LaunchAgent):
   ./install.sh

MultiDisplayVCPServer v1.1.1

I am hoping I fixed a small issue where capture cards could be seen as a monitor and interject VCP codes.

Multi-Display VCP Server v1.1.0

Optimization mostly. Fixed a few important race conditions between the server and client. The server now packages a cached version of the data on initialization.

MultiDisplayVCPServer v1

This is the initial release of the server side portion of MultiDisplayVCP.