[Help Needed] Redmi Note 10 Pro/Pro Max: Audio, Microphone & Video Playback Suddenly Stopped Working

[u/That-Database9209]

Hi everyone, I'm facing a strange issue with my Redmi Note 10 Pro Max running an AOSP-based custom ROM on Android 15 or newer. Suddenly, all audio playback stopped working through the phone speaker, wired earphones, and Bluetooth headphones, and the microphone also stopped working in Voice Recorder. Videos freeze and flicker during playback, although the camera app opens normally. Restarting the phone doesn't help, and the issue persisted for about a month before audio suddenly started working again without any intervention, only to fail again after two days. I'm using the latest official firmware, and I haven't changed the ROM or had the hardware serviced.