Cannot generate key after fresh install

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https://bbs.archlinux.org – It certainly doesn't need to be immediately after - but you will not be able to use package signing until it is generated.  My point was more that you shouldn't stop the process then retry it later, though I was also under the mistaken impression that you had X already.  I'd suggest running the key init in one tty, then when it gives you that message, just leave it be (don't stop/quit the process), switch to another tty and go about other business.  You can cat some files to /dev/null, or do deliberate generation of random bits - but just editing a few config (HowTos)