For those still using an AMD GCN 1.1 "Sea Islands" GPU like the Radeon R9 290/390 series, HD 7790 / 8870, or other Radeon Rx 200 / Rx 300 series GPUs, there is an exciting early Christmas present this year. Timur Kristóf of Valve's Linux graphics driver team sent out the patch series on Sunday for enabling the GCN 1.1 GPUs to use the newer AMDGPU driver on Linux by default in place of the existing "Radeon" driver. This can mean better performance, Vulkan driver support out-of-the-box, and other improvements compared to using that older Radeon driver...