Cannot get OpenCl to recognize AMD GPU (RX 480) after installing amdgpu-pro drivers
I have the same problem trying to use OpenCl (for mining) via ssh (despite I installed amdgpu-pro using the --headless option). If you experience the issue via ssh try to log in directly after boot and start the specific process there as a workaround. If it does not work and you installed amdgpu-pro via ssh try to install it directly.