Sound "dies" during the night??

[seamusdemora]

REF Q&A Discussion: #695

This doesn't happen very often, but I guess "too often" to ignore:

The sound stops playing during the night

Any ideas or suggestions to yield a suspect list? I have looked through the systemd logs using journalctl:

journalctl -S yesterday | less

I have used every search term I can think of: blue, alsa, rainstorm, mpg123. Nothing "interesting" shows up.
However, in the cron job I use to start the rainstorm script, I did find this:

Playing MPEG stream 1 of 1: rainstorm.mp3 ...

MPEG 1.0 L III cbr128 44100 j-s
ALSA lib pcm.c:8570:(snd_pcm_recover) underrun occurred

Following are my root crontab entries to start rainstorm:

# ROUTINE start @ 05 03  GMT: 1. stifle wifi, 2. start 'rainstorm' -> 'mpg123'
4 3 * * * /usr/bin/nmcli radio wifi off
5 3 * * * /usr/local/bin/rainstorm >> /home/pi/rainstormlog.txt 2>&1

I turn wifi OFF because:

1. I was getting some "static" in my audio.
2. RPi uses the same antenna for Bluetooth & WiFi.
3. It seems to reduce the noise/static I hear through the BT speaker

Following is the complete rainstormlog.txt from last night (note that time is UTC/GMT). I've been a bit lazy & haven't recorded more date/time stamps, but it appears that the trouble (underrun occurred) started during the "3rd round" playback; mpg123 stopped (Terminated) during the "4th round". And then the alsa error -19 at the 42:39 mark. Which seems strange since no log entry appeared in the systemd journal?!

But PLEASE NOTE: I have found instances of the underrun occurred error in rainstormlog.txt that apparently did not result in a Termination of mpg123. I did run an apt upgrade earlier in the day yesterday that installed a new kernel & new firmware.

Tue 30 Apr 03:05:01 UTC 2024; loop 1, /usr/local/bin/rainstorm
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
Attempting to connect to DF:45:E9:00:BE:8B
[^AESC[0;93m^BCHG^AESC[0m^B] Device DF:45:E9:00:BE:8B Connected: yes
[^AESC[0;92m^BNEW^AESC[0m^B] Endpoint /org/bluez/hci0/dev_DF_45_E9_00_BE_8B/sep1
[^AESC[0;92m^BNEW^AESC[0m^B] Endpoint /org/bluez/hci0/dev_DF_45_E9_00_BE_8B/sep2
[^AESC[0;92m^BNEW^AESC[0m^B] Transport /org/bluez/hci0/dev_DF_45_E9_00_BE_8B/sep1/fd0
Connection successful
Tue 30 Apr 03:05:04 UTC 2024; loop 2, /usr/local/bin/rainstorm
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layers 1, 2 and 3
        version 1.31.2; written and copyright by Michael Hipp and others
        free software (LGPL) without any warranty but with best wishes

Directory: /home/pi/
Playing MPEG stream 1 of 1: rainstorm.mp3 ...

MPEG 1.0 L III cbr128 44100 j-s

[73:05] Decoding of rainstorm.mp3 finished.

Playing MPEG stream 1 of 1: rainstorm.mp3 ...

MPEG 1.0 L III cbr128 44100 j-s

[73:05] Decoding of rainstorm.mp3 finished.

Playing MPEG stream 1 of 1: rainstorm.mp3 ...

MPEG 1.0 L III cbr128 44100 j-s
ALSA lib pcm.c:8570:(snd_pcm_recover) underrun occurred

[73:05] Decoding of rainstorm.mp3 finished.

Playing MPEG stream 1 of 1: rainstorm.mp3 ...

MPEG 1.0 L III cbr128 44100 j-s
Terminated

mpg123: death by SIGTERM
[src/libout123/modules/alsa.c:write_alsa():242] error: Fatal problem with alsa output, error -19.
[src/libout123/libout123.c:out123_play():700] error: Error in writing audio, wrote only -1 of 2400 (Success?)!

[42:39] Decoding of rainstorm.mp3 finished.