Originally Posted by fjnaz
I have no idea why, but I cannot bring up the display for the receiver menu on the monitor.
Because your TV is set to display what it gets from HDMI-1 output of the Oppo, which you said you're feeding to the TV directly from the Oppo (not going through the AVR)... and not from an HDMI output of the receiver. If you want to see the display output of the AVR on the TV, that requires that there be its own second HDMI connection from AVR to the TV.
So if you want to see the display from the receiver, you'll have to send its own HDMI output to a second HDMI input on the TV (if you're already using one HDMI input on the TV for direct output from the Oppo), and then select that input. Of course you'll now only be seeing what's coming from the AVR, and not what's coming from the Oppo.
Or, to see BOTH Oppo output as well as AVR display output conveniently and all at the same time, you can simply send HDMI-1 out of the Oppo into an HDMI input on the AVR rather than directly to the TV, and then send an HDMI output from the AVR to the TV. Now you'll see both Oppo output as well as AVR display on the TV when selecting that single HDMI input on the TV. Just be sure to set your AVR not to apply any of its own potential video processing to the input coming from the Oppo, and now the image quality results on the TV from the Oppo will be exactly the same as if you'd sent HDMI-1 out of the Oppo directly to the TV.
And if you send HDMI-1 out of the Oppo to the AVR, you no longer need to send HDMI-2 to the AVR (for audio). Disconnect HDMI-2 from the AVR, and now both audio and video from the Oppo will go to the AVR via its HDMI-1 output. The single HDMI output from the AVR to the TV will thus carry both Oppo video as well as potentially AVR display, and the audio provided from the Oppo's HDMI-1 will simply be processed by the AVR and delivered to your sound system.