Please don't be offended by this because I absolutely agree the product should work and have no idea on an eta for drivers that will make it work. I am just an AMD user like you. You and many others are asking the same question. This has already been addressed in these forums and I don't believe anyone knows.
But seeing as you have an RX 580, why on earth would you have bought a 2200G to pair with it? Just seems like you would have been avoiding a whole world of issues not going the APU route, when you had no need for the internal graphics. Or do you? I am not trying to pick on you or anything either, really, just wondering if there was a logic to this I may be missing?
These forums are just your peers helping you, not AMD employees, you need to open a support ticket for AMD to respond with help, you can do that here: Email Form
Should have probably explained a little better,
My main system is a Ryzen 7 1700 which is where the RX 580 usually resides.
The 2200G was / is built as a test bench for bench marking budget cards.
I used to use a core i5 4590 but with the Ryzen 3 cpus being so popular and more relevant than a 4 year old i5 in terms of price I refreshed my bench table around a 2200G figuring I would still get the benefit of an iGPU when I needed to troubleshoot / flash gpu's like I had with my intel chip
Only reason it flagged up was when I was bench testing a used R9 285 which I had just tried out on another system with a Ryzen 3 1200.
Frame rates were upto 15% lower when using the APU because of the 17.xxx drivers
So I decided to test the 1200 and 2200G out with all the cards at my disposal.
GTX 980Ti - Parity
GTX 770 - Parity
GTX 1050Ti - Parity
R9 380X - Differences in newer titles
R9 285 - Differences mainly in new titles
RX 580 - Differences in new titles
The latest nvidia Drivers install without a hitch wheras Radeon drivers are locked to the current version "supported" by the VEGA 8 graphics on the APU (regardless of disabling it in bios)
I had raised a ticket a while back but no response really so I turned to the forums since it seems at this point if anyone buys an APU with the intention of upgrading or adding a gpu later - even a lowly new card like the 1050ti or a used card like a mid level R9 card - they are losing performance by chosing a Radeon card.
Obviously I dont want to write articles or make videos where my benchmark results are what I would call needlessly skewed so I was hoping someone on here would have a work around.
Hope that kind of explains the why at least!
Sure makes better sense, I was really wondering. Just don't think it is likely a good test bench, you always want a test bench to be stable an never a possible issue, and that is sure not what the new apu offers, as I am sure you are aware of now. I hope they get the issues sorted. This apu / card issue is something that has plagued them for a long time now in my opinion, long before the Ryzen Vegas. Then combined with the fact the new vega apu has it's own new issues, and I have read a lot of the same complaints. Hopefully future updates will fix things. So far updates to the new apu's are moving at a snails pace.
Wish I had some helpful advice for you. Good Luck!