no notification sounds after a while

• /e/ version: 2.2
• Device model(s): FP3
• Developer mode enabled: no
• Device rooted: no
• Trackers blocker enabled: yes

Summary

When the device is up for a while (some days) the notification sounds are not audible anymore. A notification arrives, the LED blinks, the notification appears in the notification area, but no sound.

The problem

Steps to reproduce

Ha, you can't reproduce it and you can't predict when it will happen next time. But I have it for sure after 7...11 days of uptime. It was also a topic on 2.0 and 2.1, now I have it still on 2.2 and it happens on two (!) devices. I can't remember that it occured before 2.0.

What is the current behavior?

The configured notification sounds for SMS, Mail, Signal, plugging or unplugging a USB cable ... are not audible anymore. I can't say if they are not found or not played or played quietly or whatever, I can't hear them in the ordinary phone speaker.

I'm not sure about the phone ringtone because I don't get phone calls very often.

Update: When it happens and the sounds are really not audible anymore selecting a sound file in the Settings app is still possible. There I still hear all my sounds, regardless of which one I choose.

What is the expected correct behavior?

Every configured sound should be reliably played.

Technical informations

Meanwhile I placed a .nomedia file in my 45GB music library to relieve the indexer. My music player is not based on that. So the amount of indexed music files should really be manageable, I have not more or stranger files than others.

Solutions

Workaround

The only workaround I see is: reboot. After a reboot all sounds are there again.