The workaround described only works only once, but not any more after boot.
The reason is the missing service 'chrony' since the service 'ntp' isn't longer supported by timedatectl. So the problem can be solved with: $ sudo apt-get install chrony $ sudo timedatectl set-ntp true The option 'set-ntp' is quite irritating, but works with chrony. ** Package changed: ubuntu => chrony (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1920808 Title: ubuntu-20.04.2 for raspberry, updating and installing errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chrony/+bug/1920808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs