Ubuntu
cryptsetup package

  1. Bug #62751
  2. Comment #104

Comment 104 for bug 62751

Revision history for this message
Patrick J. LoPresti (lopresti) wrote : Re: [Bug 62751] Re: Upstart doesn't activate luks volumes (also non luks) in cryptsetup

/dev/random blocks until it has enough entropy to guarantee
randomness. That is probably why wiggling the touchpad gets things
going again.

If you have /dev/hwrandom, you can use that... Otherwise, you can use
/dev/urandom to avoid blocking, but theoretically this could give up
some security (since the random generator's internal state could be
predictable at boot).