I’m glad to hear that there’s a possible Polaris 22 support.
The Intel nuc “Hades Canyon” contains a Polaris 22 graphics (AMD Vega M GL/GH, glued within an Intel i7-8705G/i7-8809G). It is currently injecting graphics card to a Ellesmere Card (67df1002, displayed as an AMD RX480) in macOS 10.14.4. The proof works with glitches anywhere with Metal interface.
It is reported that in macOS 10.14.5 beta 2, the inject works no more and stops macOS from booting. Which looks just like what this thread is talking about.
If it could happen, I’m looking forward to try the new injections/patches in order to make 10.14.5 and future macOS working. However, as the current knowledge I accumulated, I can only come up with an idea that injecting the graphics to maybea mentioned device-id in this thread. Are there any idea or maybe I should just try it out.
Hopefully there will be some iMacs with this card later this year then some initial drivers should arrive. Most people want to wait for cards with axial fans as these blower cards are too loud under pressure.