Please post the files in /var/log/dist-upgrade. -- package update-manager 1:0.81.3 failed to install/upgrade: ErrorMessage: SystemError in cache.commit(): E:Sub-process /tmp/tmpOacJsz/backports/usr/bin/dpkg returned an error code (1) https://bugs.launchpad.net/bugs/278987 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.
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