No volume control. I have a new Onkyo RZ830 and new Connect. Set up works fine. The Connect as well as all other Sonos devices are seen on the net (other forum strings have stated this is a problem with this Onkyo but not in this case). Power and input switching work fine. In the past, the Set Volume in the Works with Sonos menu on the Onkyo needs to be set quite high to get a good dynamic range on the Sonos app volume control. This has been an acceptable method.
On this set up, the Onkyo volume gets set at what ever level you choose (or last level) but the Sonos room volume control has no effect. Setting the room Advanced settings volume to "pass through" allows the Sonos app volume slider to move but has no effect on the volume. Setting to "variable" is not allowed as the app defaults to "fixed" when "variable" is selected and setting to "fixed" is obviously not the solution. To be honest, I don't recall using the "pass through" setting in the past but that may have been the case. I would assume the "pass through" setting to allow the volume to be controlled at a source connected to line in and passes THAT level through without manipulation. Shouldn't the "variable" setting be selectable?
Are there other settings on either the Connect or the Onkyo that allow the Sonos app to control volume normally? or has a recent update on either side broke the system AGAIN. If this is a firmware - upgrade problem...then I'm sure everyone will agree this is getting very old regardless of who's to blame. I've worked with consumer electronics for 20+ years and if I have to come to a forum for answers to simple issues, there is a break down in the procedural process.