Comment 55 for bug 1921632

My machine is a Dell XPS 9700, happy to provide hardware info or any other details you may be interested in. With -20 kernel audio and 4k support is both broken. Audio behaves exactly like with unpatched -16 or -17 kernels, only "dummy output" is present no onboard input/outputs are visible.

Would there be any data/tests that you have in mind to see why the -20 kernel does not correctly handle the audio devices? I'm happy to perform those if you give me a general direction.