It looks to me that this is either a bug in unattended-upgrades, or intended behaviour that due to the conffile prompt unattended-upgrades is supposed to fail and requires user intervention to answer the prompt. I'm not sure which.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1631789 Title: package ntpdate 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 failed to install/upgrade: EOF on stdin at conffile prompt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1631789/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs