[honcho]

Dr.Feelgood or anyone with ASRock J4205-ITX, could you please test if it's possible to send audio over it's DVI port? Simply use some DVI to HDMI passive adapter or cable to attach to HDMI TV or Monitor with sound support.

It may sound weird at first to send audio over DVI, after all DVI shouldn't carry audio, right? I did my research and found that it is not uncommon for DVI to be able to carry audio, especially in those cases where the DVI header is simply applied to the actual HDMI port of the GPU chip. It is not clear at this moment what are the capabilities of J4205 GPU. But if it mimics Skylake GPU architecture to certain extent, it should at least have one DP port and one HDMI (1.4) port. We know that the HDMI 2.0 OUT header of the ASRock J4205-ITX is actually on-board adapted from the DP port of the GPU, because the GPU's HDMI is still only 1.4. Therefore it's possible that the DVI header is actually connected to the GPU's HDMI port. Then it might support audio as well.

It's important for my use case:
- Connect 4K TV via HDMI 2.0 to get best picture
- Connect old AV receiver via HDMI 1.3 to get best sound

So I need two HDMI outputs. If ASRock J4205-ITX's DVI is actually adapted HDMI and supports audio, then I can use it for my use case.

Thanks in advance for checking this!

Edit: and reading your story below, you might actually benefit from this use case as well, to be able to use your old AV receiver:

I've just installed Asrock J4205-ITX and can play all 4K material. Works really good and CPU usage is never above 30%.

However when i connect it to my somewhat old VSX 922 receiver i can only get 30p output, TV supports 60P.
Is this a limitation of the receiver? Is there something i can do to get 60p output to the receiver also?

.0001% chance it works. I wouldn't bother testing man, just buy a new reciever.