I posted this in the 6.3 announcement thread, but figured I might as well ask the question in this subforum.   I upgraded to 6.3 and wanted to try IGD passthrough. I do see the GPU as a pass through option, however, I see nothing in the sound section. I remember reading a thread that it was not possible to isolate HD-audio into its own group on the Skylake platform, but that it was being worked on.   Does this seem feasible at some point in the future?   Here are my IO-MMU groups for i