[Ardour-Users] Ardour/Mixbus 32C adds a background noise

[jonetsu at teksavvy.com]

Hello,

I got new speakers, Yamaha's HS5 plus a HS8S subwoofer.  I start
Bitwig, do some stuff, exit.  I start Renoise, do some stuff, exit.  I
start Mixbus 32C with a brand new session, nothing added, nothing done,
and as soon as Mixbus has started there is a background noise heard.
Every single time.  And as soon as it is terminated, the background
noise, the humming, goes away.  Ardour 4.7.0 does the same thing.