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**To**:**current-users%netbsd.org@localhost****Subject**:**no entropy?****From**:**Patrick Welche <prlw1%cam.ac.uk@localhost>**- Date: Thu, 10 Sep 2020 16:06:12 +0100

I just upgraded to ancient boxen to -current/amd64. One has its 256 bits, the other has none?! I have tried playing spot the difference but haven't spotted anything: OK: [ 1.000000] entropy: no seed from bootloader [ 7.024989] entropy: ready # rndctl -ls Source Bits Type Flags raid0 0 disk estimate, collect, v, t, dt ucom0 0 tty estimate, collect, v, t, dt /dev/random 0 ??? estimate, collect, v wd1 0 disk estimate, collect, v, t, dt wd0 0 disk estimate, collect, v, t, dt cpu1 0 vm estimate, collect, v, t, dv cpu0 0 vm estimate, collect, v, t, dv coretemp1-cpu1 0 env estimate, collect, v, t, dv, dt coretemp0-cpu0 0 env estimate, collect, v, t, dv, dt wm1 0 net estimate, v, t, dt wm0 0 net estimate, v, t, dt system-power 0 power estimate, collect, v, t, dt autoconf 0 ??? estimate, collect, t seed 256 ??? estimate, collect, v 0 bits mixed into pool 256 bits currently stored in pool (max 256) 0 bits of entropy discarded due to full pool 0 hard-random bits generated 0 pseudo-random bits generated puzzling: [ 1.000000] entropy: no seed from bootloader [ 7.383099] entropy: WARNING: consolidating less than full entropy # rndctl -ls Source Bits Type Flags raid3 0 disk estimate, collect, v, t, dt raid2 0 disk estimate, collect, v, t, dt raid1 0 disk estimate, collect, v, t, dt raid0 0 disk estimate, collect, v, t, dt /dev/random 0 ??? estimate, collect, v wd1 0 disk estimate, collect, v, t, dt wd0 0 disk estimate, collect, v, t, dt cpu1 0 vm estimate, collect, v, t, dv cpu0 0 vm estimate, collect, v, t, dv coretemp1-cpu1 0 env estimate, collect, v, t, dv, dt coretemp0-cpu0 0 env estimate, collect, v, t, dv, dt wm1 0 net estimate, v, t, dt wm0 0 net estimate, v, t, dt system-power 0 power estimate, collect, v, t, dt autoconf 0 ??? estimate, collect, t seed 0 ??? estimate, collect, v 0 bits mixed into pool 0 bits currently stored in pool (max 256) 0 bits of entropy discarded due to full pool 0 hard-random bits generated 0 pseudo-random bits generated both installed from the same tarballs, with GENERIC, and both apparently with the same model of CPU, both show [ 1.991010] aes: Intel SSSE3 vpaes [ 1.991010] aes_ccm: self-test passed [ 5.142260] cgd: self-test aes-xts-256 [ 5.142260] cgd: self-test aes-xts-512 [ 5.142260] cgd: self-test aes-cbc-128 [ 5.142260] cgd: self-test aes-cbc-256 [ 5.142260] cgd: self-test aes-cbc-128 (encblkno8) Maybe I need to toss a coin... Cheers, Patrick

**Follow-Ups**:**Re: no entropy?***From:*Martin Husemann

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