I face the same thing when upgrading. I did a do-release-upgrade followed by a dist-upgrade.
nemo@emerald:~$ sudo apt-get install -o APT::Immediate-Configure=false --reinstall python-minimal Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libasound2: Breaks: libasound2-plugins (< 1.0.24) but 1.0.22-0ubuntu6 is to be installed libglib2.0-0: Breaks: gnome-control-center (< 1:3) but 1:2.30.1-0ubuntu2 is to be installed libpango1.0-0: Breaks: plymouth (< 0.8.2-2ubuntu19) but 0.8.2-2ubuntu2.2 is to be installed ppp: Breaks: network-manager (<= 0.8.0.999-1) but 0.8-0ubuntu3.3 is to be installed Breaks: network-manager-pptp (<= 0.8.0.999-1) but 0.8-0ubuntu3 is to be installed E: Broken packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990740 Title: upgrading from lucid to precise fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-defaults/+bug/990740/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs