https://bugs.freedesktop.org/show_bug.cgi?id=106306
--- Comment #2 from Alex Deucher alexdeucher@gmail.com --- CI parts default to the legacy dpm support, you need to enable powerplay to use the new APIs. Boot with amdgpu.dpm=1 on the kernel command line in grub to force the driver to use powerplay rather than the old dpm code.