Constant noise / beep when mu sound play on headphones / speakers

When using ubuntu 20.04 i notice that when not playing any sound over external speakers i have constant long beep.

i check pulseaudio logs and i notice when the pulseaudio going in to suspend this noise / beep start.

systemctl --user stop pulseaudio.socket
systemctl --user stop pulseaudio.service
pulseaudio -v

solution is to comment the line

load-module module-suspend-on-idle

in file

/etc/pulse/default.pa

then restart pulse audio

systemctl --user restart pulseaudio.service