This does not seem like an unattended-upgrades issue. See the DpkgTerminalLog.txt file.
u-a is correctly triggering the package manager (that's what it does). The error seems to be in update-rc.d, caused by the minidlna package: insserv: There is a loop between service minidlna and lineakd if stopped insserv: loop involving service lineakd at depth 2 insserv: loop involving service minidlna at depth 1 insserv: Stopping lineakd depends on minidlna and therefore on system facility `$all' which can not be true! insserv: exiting now without changing boot order! update-rc.d: error: insserv rejected the script header 14.10 is past end-of-life. Does this issue still occur in a newer release of Ubuntu? ** Package changed: unattended-upgrades (Ubuntu) => minidlna (Ubuntu) ** Changed in: minidlna (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1470299 Title: package unattended-upgrades 0.82.8ubuntu0.3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/minidlna/+bug/1470299/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs