With the Linux 5.0 kernel the AMDGPU landed its support for FreeSync / Variable Rate Refresh support and that’s already been connected by FreeSync/VRR support within Mesa’s RadeonSI OpenGL driver. However, FreeSync support for the RADV Radeon Vulkan driver was postponed — a mix request is now open but it is not expected to be merged at this point for a lack of a configuration control system…