I found the problem.
"The motherboard bios"
In practice i do not know why the bios always enabled the integrated video card by disabling some functions of the pcie slot ..... How did I notice? I put a live Debian ISO created by me with specific utilities for the hardware .... Bingo the bios gone...
i am using your efi and everything works except the card .... absurd with sierra and the old motherboard worked following this guide:
https://www.tonymacx86.com/threads/enabling-amd-rx-4xx-cards-in-sierra.201364/
that you created.
I just tried the card on the old hardware and it works, when I...
here I am, I removed the card, reset the bios, set the parameters for mac os and started with the integrated graphics card.
It works and I've done various tests including hardware tests.
As far as your question about old hardware was concerned, it was different from what I use now older.
I have followed your guides with a negative result.
I updated as you said but nothing.
After 15 minutes blackscreen.
In my old hardware configuration I had modified the kext amdx4100 and 9500, injected lilu and wathergreen all over sierra.
What can I do I attach the log
sorry for the late reply.
I attach the only log I have found.
Let me explain better, the operating system starts normally up to the login window when you log in immediately gives me blackscreen. If I try each port the signal is but always blackscreen. If after I force the restart with the power...
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