Public bug reported: When running command sudo do-release-upgrade, the upgrade stops and produces the output below. I'm also attaching the logs as requested.
-------- Extracting templates from packages: 100% Preconfiguring packages ... Extracting templates from packages: 100% Preconfiguring packages ... Extracting templates from packages: 100% Preconfiguring packages ... dpkg: warning: 'ldconfig' not found in PATH or not executable. dpkg: warning: 'start-stop-daemon' not found in PATH or not executable. dpkg: error: 2 expected programs not found in PATH or not executable. Note: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin. Error in function: A fatal error occurred Please report this as a bug and include the files /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in your report. The upgrade has aborted. Your original sources.list was saved in /etc/apt/sources.list.distUpgrade. SystemError: E:Sub-process /usr/bin/dpkg returned an error code (2) Could not install the upgrades The upgrade has aborted. Your system could be in an unusable state. A recovery will run now (dpkg --configure -a). Please report this bug in a browser at http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug and attach the files in /var/log/dist-upgrade/ to the bug report. installArchives() failed dpkg: warning: 'ldconfig' not found in PATH or not executable. dpkg: warning: 'start-stop-daemon' not found in PATH or not executable. dpkg: error: 2 expected programs not found in PATH or not executable. Note: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin. Upgrade complete The upgrade has completed but there were errors during the upgrade process. To continue please press [ENTER] === Command detached from window (Sun Mar 8 13:00:09 2015) === === Command terminated with exit status 1 (Sun Mar 8 13:00:09 2015) === [screen is terminating] ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Attachment added: "logs.tar.gz" https://bugs.launchpad.net/bugs/1429578/+attachment/4338035/+files/logs.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1429578 Title: Upgrade from 12.04.5 LTS to 14.04.1 LTS crashes and asks to log bug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1429578/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs