I just set up a Roon server on a Windows 10 21H1 machine on an older Intel NUC6i7KYK with 32GB of memory. I am connecting the PC to a Pioneer VSX-LX305 via HDMI using the ASIO4ALL driver which is set to use the HDMI out. I can get multichannel, etc. So far so good … but not really.
When I have my TV on, everything is fine. Once I turn the TV off I get no audio output. I am not sure if this is Roon because I can select something to play and it looks like it is in the iOS app, but it isn’t. If I turn the TV on - magic! The sound is back. I can use my Sony SCD-XA5400ES or Pioneer UDP-LX500 via HDMI for DSD direct without a monitor on so I know it’s not the receiver.
I’m open to any and all ideas.