Running Blender 2.80 on Linux with AMD Radeon RX Vega M GL discrete GPU with Mesa 19.1.3, I had this warning:
Warning: Could not find a matching GPU name. Things may not behave as expected. Detected OpenGL configuration: Vendor: X.Org Renderer: AMD VEGAM (DRM 3.30.0, 5.1.20-desktop-2.mga7, LLVM 8.0.0)
I checked only for X.Org vendor + AMD renderer substring, assuming that there might be other AMD GPUs with this kind of renderer string. The Vega M seems a bit specific as (at least on my HP Spectre x360) it seems white labelled to Intel (Windows drivers are provided and branded by Intel).
Doesn't handle that part of the report, which was likely unrelated:
While the above file shows that the OpenCL capabilities of the AMD GPU seem fine (confirmed by opencl), it is not listed as recognized in Edit > Settings > System.