The upgrade fails because of at least this package: xserver-xorg-video-intel 2:2.99.911+git1404231930.5fbbfd~gd~s 0
This is from a PPA and not the official Ubuntu repositories and includes a version number greater than the package provided by the official Ubuntu repositories. Subsequently, the upgrade is unable to succeed. You'll need to use the tool ppa-purge to install the official version of the Ubuntu packages and disable the PPA before the upgrade can succeed. Thanks and good luck. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1314739 Title: Unable to upgrade from 13.10 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1314739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs