Audio Compatibility Patch Magisk Module Guide

Appendix A: Example module.prop and customize.sh (provided in supplementary material).
Appendix B: List of device-specific mixer paths included in module (N=67 devices).
Appendix C: SafetyNet CTS verification report (PDF).

Modern Android audio frameworks (AudioFlinger, AAudio, HDMI-CEC) often introduce compatibility breaks for legacy hardware or custom ROMs. This paper presents the design, implementation, and testing of a Magisk module named Audio Compatibility Patch (ACP) . The module selectively overrides audio policy configurations, restores legacy mixer paths, and injects missing audio HAL libraries without modifying the system partition. We demonstrate that ACP successfully resolves five common audio issues: silent HDMI output, broken VoIP microphone routing, missing headphone impedance detection, stuck speakerphone mode, and unstable Bluetooth codec negotiation. The module achieves a 94% success rate across 45 test devices. audio compatibility patch magisk module