Please do not waste anyone’s time by suggesting built-in open source driver. I cannot use it because this workstation is my OpenCL development playground, and open-source AMD driver simply does not work.
I need to install AMD proprietary driver, and I already tried 2x versions from AMD web site, but each fails with the same error message:
error: Detected X Server version ‘XServer 1.19.3_64a’ is not supported. Supported versions are X.Org 6.9 or later, up to XServer 1.10 (default:v2:x86_64:lib:XServer 1.19.3_64a:none:4.11.8-300.fc26.x86_64:)
The drivers that I tried are the latest Crimson edition 15.12 and the older catalyst 15.9.
I recall that proprietary driver used to be even included in some repo, but I cannot remember what it was called and where it was available from. It was called fglrx, I think. Now I cannot see it in dnf. There is something called
there, and I installed it, but the only difference that I saw was that it blacked out my primary monitor. No amount of tinkering with xrandr would bring the picture back, and I had to uninstall.