I had the same problem when I upgraded my SheevaPlug (armel) from Buster to Bullseye.
I found this thread: https://archlinuxarm.org/forum/viewtopic.php?f=15&t=14549 Adding the following service override makes haveged start as expected: root@puny:~# cat /etc/systemd/system/haveged.service.d/override.conf [Service] SystemCallFilter=uname Please would you consider including that for armel packages? Cheers, Dave