Fixing getrandom()

As long as you can crank up the gain high enough to input "hiss" or "static" (electronic shot noise or cosmic background radiation) then even a microphone jack with no microphone plugged in, or a radio with no aerial, is a source of physical randomness. I don't know if the common on-board microphone sockets in the PC world can be used this way. I guess the problem for the truly paranoid, is how to tell whether what is coming in has been deviously compromised so as to only look random.

Personally I'd go with a boot parameter "paranoia = n" (maybe the current and maximum value is 11, with a nod to Spinal Tap). 10 would allow use of the random number generator on the CPU chip if there is one, and thereby solve all the problems other than the possibility that (insert conspiracy theory here).