module.prop example:
id=audio_compat
name=Audio Compatibility Patch
version=1.0
versionCode=1
author=YourName
description=Systemless fixes for audio HAL/config/library mismatches
minMagisk=23000
| Method | Systemless? | Persistence | Ease of use | |--------|-------------|-------------|--------------| | ACP Magisk | Yes | OTA survives* | Medium | | Manual file replace | No | Lost on update | High risk | | Custom kernel | No | Permanent | Hard | audio compatibility patch magisk module
*If using Magisk’s overlay.d and OTA survival script. module
| Symptom | Root Cause | Affected ROMs |
|---------|------------|----------------|
| HDMI no sound | Missing HDMI device flag in policy | AOSP 12+ on SD835 |
| Mic in calls only works on speaker | Wrong channel mapping for VoipRx | LineageOS 19/20 |
| Headphone jack not detected | Impedance threshold too high | crDroid 9.x |
| Bluetooth stutters on LDAC | Absent offload capabilities | Pixel Experience 13 | | Method | Systemless
"Restoring Legacy Audio Functionality on Modern Android: A Case Study of the Audio Compatibility Patch (ACP) Magisk Module"