I have finally installed a Z390 Designare into my main computer's case, in replacement of a Z390 Aorus Pro. I have replaced a 4th-gen proc and mobo in another case with the Aorus Pro.
the RX590 from the Aorus will go into the Designare. a new MSI RX 5500 XT 4gb is now in the Aorus. the only config.plist mod was to add the agdpmod=pikera boot argument.
the Aorus has an unflashed Alpine Ridge card. after a cold start then a warm boot, my Apple TB monitor works fine, including mic, camera, and speakers.
however, using an alternate hookup using HDMI from the GPU to the monitor, there is no audio. the monitor shows up as an option in sound preferences, just no audio output.
I temporarily swapped in the 590 in place of the 5500 and audio thru the monitor works fine.
any ideas?
this is not a showstopper, as I can always use the rear panel audio jack, or if I buy a second apple TB monitor, use that for sound output.
I've attached my config.plist and IOReg output.
thanks in advance.