I installed the AMDGPU-Pro driver following the instructions from AMD. Kernel shows neither 'AMDGPU-Pro' nor the original 'radeon' driver "in use" but does show they are available.
Screenshot: The module is installed but not running on the kernel
I also followed the instructions from the following article to ensure that the driver will load on Kabini / Sea Islands but that still didn't help:
So basically if you want to get AMDGPU working for Sea Islands and Southern Islands GPUs on Linux 4.13+, you need to append "radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1" to your kernel command line when booting the system.
How do I get my kernel to use the driver?