• Confirm routing entries for voice_call include correct microphone devices and policy gains.

The Audio Compatibility Patch (ACP) is a Magisk module designed to fix issues where music and streaming apps (like Spotify or Pandora) fail to process audio effects from equalizers. Why You Need It audio compatibility patch magisk module

• chown -R root:root $MODPATH/system
• chmod -R 755 $MODPATH/system/vendor/lib64/*.so
• apply_selinux_rules() if [ -f $MODPATH/sepolicy/common.te ]; then magiskpolicy --live "allow ..." ; fi
• restorecon -R $MODPATH/system

4.3 SELinux and permissions

• If vendor files require non-default SELinux types, provide matching contexts in the module's file_contexts and use magiskpolicy to add transient rules at runtime if overlaying contexts is insufficient.
• Keep policy changes minimal, documented, and reversible.
• Example policy fragment (common.te):

  KSU & Apatch Support: Newer versions (like Zackptg5’s updates) support KernelSU and APatch in addition to standard Magisk. Important Integration Unlocking Audio Compatibility: A Deep Dive into Magisk

• Dump audio policy (AOSP devices):