audioDeviceAboutToStart() callback is not called in Ubuntu 20.04 on AWS

[cristeab]

I have been able to solve the above issue using:

sudo apt install linux-modules-extra-`uname -r`

Now the above callback is called and the selected in/out audio device is:

Playback/recording through the PulseAudio sound server

but the audio quality is not good. This seems to be a problem seen previously:

Glitchy Playback on Linux / PulseAudio

When doing playback in a standalone version of a plugin on Linux with the audio device Playback/recording through the PulseAudio sound server, I usually get glitchy playback. There is a 1 in 10 chance playback starts normally. The only way so far I have found to resolve the issue is to start pavucontrol (volume app for PulseAudio) in a separate terminal after the plugin was started. This also only works half of the time. If it does not work, or if pavucontrol was started before the plugin, I ca…

but there is no satisfactory solution for it. Are there other sound servers that can provide better audio quality ?