1. Get a system with Intel Cannon Lake PCH (e.g. I used a HP Spectre x360 13-p0043dx, but a X390/T490/X1C7 ThinkPad model should work as well, I can't test on a ThinkPad because I don't own one).
2. Apply this patch to a source tree (CURRENT)
3. Play something (e.g. YouTube video). Audio should work