Comment 20 for bug 1866357

Currently I only have info for ubuntu kernel, the issue does not present before 4.15.0-58 kernel (including 4.15.0-58), and kernel after that started to have the pop noise. I have done some investigation, found the commit below, could you please help to check if this is one of the many differences between good and bad kernels that I mentioned?
https://lore.kernel.org/patchwork/patch/1098499/

I will see if I can find a better machine to try your steps.
Thanks!