https://bugs.freedesktop.org/show_bug.cgi?id=104854
--- Comment #2 from José Pekkarinen koalinux@gmail.com --- Created attachment 137911 --> https://bugs.freedesktop.org/attachment.cgi?id=137911&action=edit Initialization output on SMU firmware load.
Seems that autodetection of firmware method to load fails to get a proper default, setting firmware load to SMU on /etc/modprobe.d fixes the issue for me.
$ DRI_PRIME=1 glxinfo|grep OpenGL OpenGL vendor string: X.Org OpenGL renderer string: AMD Radeon (TM) R7 M360 (ICELAND / DRM 3.23.0 / 4.15.7+, LLVM 5.0.1) OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.0.0-rc4 OpenGL core profile shading language version string: 4.50 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 18.0.0-rc4 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.1 Mesa 18.0.0-rc4 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10 OpenGL ES profile extensions: