Can confirm that these steps BEFORE REBOOTING lead to a working 18.04 system after the 16.04 upgrade fails.
Maybe these steps could be added to the upgrade script In psudocode: if [ error due to systemd1.service ] then; sudo mv /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.bak sudo apt-get install -f sudo apt dist-upgrade sudo apt autoremove exit fi -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd-shim in Ubuntu. https://bugs.launchpad.net/bugs/1773859 Title: upgrades to 18.04 fail Status in systemd package in Ubuntu: Fix Released Status in systemd-shim package in Ubuntu: Won't Fix Status in systemd source package in Bionic: Fix Released Status in systemd-shim source package in Bionic: Won't Fix Status in systemd source package in Cosmic: Fix Released Status in systemd-shim source package in Cosmic: Won't Fix Bug description: [Impact] * Some systems fail to upgrade due to conflicts between systemd and the (now removed from the archive) systemd-shim / upstart. * Instead of trying to work out what's the problem in ordering / removal of diverts, ensure that systemd is never unpacked whilst systemd-shim/upstart are still on disk. Thus declare conflicts against systemd-shim/upstart packages in systemd package. [Test Case] * monitor drop-off of upgrades with below reported problem * Check that it is possible to upgrade to bionic's libpam-systemd from xenial with systemd-shim installed on xenial, ie. lxc launch ubuntu-daily:xenial test-shim-upgrade lxc exec test-shim-upgrade apt update apt install systemd-shim wget https://deb.debian.org/debian/pool/main/s/systemd-shim/systemd-shim_10-3_amd64.deb apt install ./systemd-shim_10-3_amd64.deb sed 's/xenial/bionic/' -i /etc/apt/sources.list apt update apt install systemd this currently passes, however, systemd-shim remains installed. It should be removed instead. Apt install systemd should have lines like this: The following packages will be REMOVED: systemd-shim ... Removing 'diversion of /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service to /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd by systemd-shim' ... [Regression Potential] * systemd-shim/upstart are both removed and not supported in bionic, thus forcing their removal via conflicts should bring the system into an expected state. [Other Info] * original bug report $ sudo apt upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be REMOVED: systemd-shim 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 71.7 kB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 632222 files and directories currently installed.) Removing systemd-shim (9-1bzr4ubuntu1) ... Removing 'diversion of /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service to /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd by systemd-shim' dpkg-divert: error: rename involves overwriting '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service' with different file '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd', not allowed dpkg: error processing package systemd-shim (--remove): subprocess installed post-removal script returned error exit status 2 Errors were encountered while processing: systemd-shim E: Sub-process /usr/bin/dpkg returned an error code (1) Commenting out the dpkg-divert in systemd-shim's postrm solved this for me and I was about to continue the upgrade. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1773859/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp