I think you wrote this wrong, because if the AVR is asleep it should not display anything at all. With the Dr HDMI the HTPC can still do a EDID handshake with the spoofed AVR. I'd try using preset #1 first and see if you can get that working, as it will eliminate a possible error that you didn't learn the EDID correctly (ofc this will limit you to 5.1 for the time being). With gefen detective it only needed power to learn the EDID code, after it was set it didn't require power anymore.
Yes of course. I meant if the HTPC wakes whilst the AVR is asleep and I THEN wake the AVR, it displays "Stereo" and audio doesn't work.
Unfortunately I tried bank 1. It actually did allow 7.1 to passthrough but I had all the same issues. It is as though the Dr HDMI isn't even there!
I initially tried all this without USB power plugged in and the same issues. I can retry it though.
I may of missed it but it doesn't say this in the instructions you linked, it only mentions using the USB for custom EDID programming over the USB and updating the firmware.
I was reading it on the Dr HDMI forums (kind of) http://dme.ghost2.net/forum/viewtopic.php?p=286059&sid=196ab87972fd77e5361fda74a6c3d951#286059
Does the HDMI-CEC setting etc on the Denon make any difference? Should I try learning the EDID whilst the Denon has all HDMI-CEC and passthrough functions disabled?