[PROBLEM] Multiroom turn to static

[Tucher]

I have a Pi 5 powered with a poe+ hat. I run Moode on an SD card and have FLAC files on an nvme. I run 2 recievers on Pi 4's connected to a 5ghz wifi network with good signal.
I can play a flac file sent to the recievers for anywhere between 2 and 5 minutes and then it just turns to static. If I go to the recievers page and un-check one of the recievers and re-check it the audio returns and will play for anywhere between 2 and 5 minutes. Rinse and repeat.

Any ideas?

Thanks in advance,
Scott

[Tim Curtis]

The symptom suggests a network issue.

To troubleshoot run a 5 minute (or longer) ping test from one of the receivers to the sender. Monitor the console output and look for really long round trip times. Then end the ping test using Ctrl-c and examine the stats. Look for really high avg and mdev (standard deviation)

Here's some sample stats from a long ping test from one of my receivers to the sender.

Code:

--- trx.home ping statistics ---
515 packets transmitted, 515 received, 0% packet loss, time 514730ms
rtt min/avg/max/mdev = 1.032/4.069/18.904/1.375 ms
pi@sig:~ $

[Tucher]

Thanks Tim,
I did a little network trouble shooting first. Changed my access points a bit to get a stronger signal. Then I ran the 5 minute ping test. I see some 13ms, a 28ms a nd a 38ms. So i will continue to looking my wifi.

--- 192.168.100.183 ping statistics ---
486 packets transmitted, 485 received, 0.205761% packet loss, time 485803ms
rtt min/avg/max/mdev = 1.317/5.076/107.705/5.246 ms

Thanks

[Tim Curtis]

Those stats don't look too bad (avg and mdev are close to one another) except for that really long max of 107ms.

IIRC the static noise condition occurs when the sender buffer runs out of data. When you monitor the ping does it show long rtt times that correlate to the music turning into static noise?

[Tucher]

Those stats don't look too bad (avg and mdev are close to one another) except for that really long max of 107ms.

IIRC the static noise condition occurs when the sender buffer runs out of data. When you monitor the ping does it show long rtt times that correlate to the music turning into static noise?

I will check that tomorrow.