MacBooks HDMI thru Denon receiver to Projector
I have an installation I did using a Denon AVR 2808 Ci to accept the HDMI signal from a PC or Mac . The HDMI comes into the Denon on HDMI 1 and out the Main Monitor HDMI output. I take the Preamp outputs of the Denon into a X32 Digital mixer into a really nice sound system in the Hall...
the projector is fed HDMI via a cat-5 extender and it all works except when using a Mac laptop...
A PC connected via HDMI connects and passes video to the projector no problem... audio to the sound system
A Mac using a mini display port with an HDMI adapter makes the HDMI handshake, I see the Denon shows connection and the projector shows connection but no Video is passed with this connection. The Mac also shows the Denon as a display option and that is selected and they react and make HDMI connection.
If i bypass the Denon and plug direct with a mini display to HDMI adapter I get video on screen from a MAC or PC
If I rout thru the Denon the PC is displayed but Mac does not. I made sure I am using all good cables and adapters and high speed HDMI cables throughout the system.
I swapped an USB 3.0 to HDMI adapter onto both my MacBooks and they both display video passing thru the Denon Receiver and audio to the digital mixer. Its just using the Mini Port display to HDMI from a Mac that does not pass video when going thru the Denon.
Is there a setting I am missing here? anyone able to shed some light on this?
the Denon has only HDMI assignments which is all working.
Why would USB 3.0 to HDMI function and not Mini Port to HDMI on a Mac?