White noise on headphone output

White noise when suspending, restarting, and shutting down the computer.
Maybe we could interpret it as a rise in voltage, so that this type of sound is produced.
the sound obviously stops when the computer completes the suspend, reboot, or shutdown command.

I suspect of kernel 5.4.64-1 since about a year ago with kernel 4.19 this did not happen and if I change to 4.19 it will most likely solve the problem.

my question is, is there a way to fix this in kernel 5.4? or should I stay with 4.19?

It would be great to be able to fix it as I’m pretty sure the problem will continue with future new kernels.

my laptop is a DELL e5540

You can always file a bug with the kernel development team if it really annoys you.

Note: Filing a bug is a lot of work!