Is this the AMDGPU Pro binary you’re talking about? Says it’s only available for RHEL/CentOS or Ubuntu.
I’m playing with Solus at the moment. I’m not married to it, I’ve just never used it and I want to see how it is. So far, I really like the UX. I don’t like the obscure package manager. Fedora is my fallback. Do you know offhand if the RHEL/CentOS driver will work with Fedora?
I honestly might just wait for the newer kernel for DP passthrough. The machine will mainly be used for IT admin tasks (just a bunch of terminal and browser windows, plus occasional Java for KVM over IPMI), so sound is really not critical at all. It’s just kind of weird to use a computer without it.
Based on this, it’s remotely possible that Solus will backport some upstream AMD stuff into their kernel to support passthrough audio… probably not though.
This device worked as expected using the spdif out:
Also, either a random update fixed the display port audio passthrough, or miraculously, the L1T KVM switch fixed the problem. The audio passthrough on the WX5100 now appears as a Radeon RX 580 audio device for whatever reason. Works perfectly.