It seems that the bug is already known by nVidia: https://devtalk.nvidia.com/default/topic/1019761/linux/no-sound-using-displayport-audio-with-375-82-384-59-and-384-69/
It seems that the bug is already known by nVidia: https:/ /devtalk. nvidia. com/default/ topic/1019761/ linux/no- sound-using- displayport- audio-with- 375-82- 384-59- and-384- 69/