Solved How to install and load AMD drivers for RX 580 on stable 12.2?

Okay, I installed 12.1-RELEASE again and installed drm-kmod from pkg. It does not have the "ring 10" error in the dmesg, so I am certain now that is causing my problems. I had a previous comment here: https://forums.freebsd.org/threads/...-for-rx-580-on-stable-12-2.78148/#post-487888 it says that with 12.1-RELEASE I have the "ring 10" error too, but disabling syscons solved it. I remember disabling it with 12.2-RELEASE too. I'll try it again to collect data before reporting this as a 12.2 bug.
 
Okay, I don't know what I did wrong last time, but now I managed to install the driver and it works properly. I haven't tried KDE yet, but I have WQHD resolution in console and I don't have this "ring 10" error and GPU init failure. What I did differently this time is doing portsnap fetch update, pkg upgrade and pkg update before building the drm-kmod port and right after that I added hw.syscons.disable="1" to the /boot/loader.conf before rebooting the system. I am pretty sure that I had syscons disabled when I tried last time, so maybe I had a typo in it, or maybe updating the ports was the key. I don't know, what matters that it works now. :)

I still have one weirdness in both 12.1 and 12.2: "Failed to add WC MTRR for [0xe0000000-0xefffffff]: -22; performance may suffer", but it is not that relevant now.
 
inf3rno said:
building the drm-kmod port
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You were advised to just build and install drm-fbsd12.0-kmod (and remove drm-kmod). It won't matter any more as soon as 12.1 is EOL, but for now, I'd still recommend you do that, so pkg won't try anything "bad"…
 
Zirias said:
You were advised to just build and install drm-fbsd12.0-kmod (and remove drm-kmod). It won't matter any more as soon as 12.1 is EOL, but for now, I'd still recommend you do that, so pkg won't try anything "bad"…
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Sure, I just wanted to try it this way first.
 
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