Pi4 audio issues with two nodes

[kyle470]

Hello,

I have a new Pi4 install running asl-2.0.0-beta.5-kc1kcc-20210226-rpi-armhf.img.zip. There are two RF nodes on this box.

There are some significant audio issues when both nodes have audio playing at the same time. For example, if one node is IDing and the other is speaking telemetry. The audio will drop out on one, sometimes both. It's particularly concerning when a voice ID is interrupted. Radios will key down with no audio for several seconds. Sometimes audio will play intermittently, with seconds of dead air in between.

I've run ASL 1 on a Pi2 for several years without any such issue. This Pi4 replaced the Pi2 with otherwise all of the same hardware, radios etc.

Thank you. 73

Kyle
K0KN

[rgr4y]

Hi Kyle --

I believe this is a known issue on Pi4s with multiple USB devices. Hamvoip has this issue as well. We'll look into it and see if there's something we can do.

[Peter-Ham]

Just some followup and additional information, this bug is also present in the 2 Beta 6 release.