[$] AMD's Display Core difficulties

Back in 2007, the announcement that AMDintended to reverse its longstanding position and create an upstream driverfor its graphics processors was joyfully received by Linux usersworldwide. As 2017 approaches, an attempt by AMD to merge a driver for anupcoming graphics chip has been rejected by the kernel's graphics subsystemmaintainer - a decision that engendered rather less joy. A look at thisdiscussion reveals a pattern seen many times before; the positions and decisions taken can seem arbitrary to the wider world but theyare not without their reasons and will, hopefully, lead to a better kernelin the long run.