Comment 6 for bug 1468582

@anthonywong
Referenced report seems as unrelated.

On my machine, the sound is clear and loud but 10 seconds after playback ends the noise starts.

I am not familiar with specific design of the soundcard but It looks/sounds like when it suspended by the driver, analog amplifier left active picking all kind of interferences from ground line.

Kernel versions 4.4.0-1x and 4.6.0RCx are affected.