Solved ! As Alexandre Moraes. I remove the xserver-xorg-video-nouveau package then the upgrade works, from Ubuntu 14.04 using i3wm.
Full set of commands: $ apt-get remove --purge xserver-xorg-video-nouveau $ apt-get autoremove $ apt-get autoclean $ apt-get update $ do-release-upgrade Best regards! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1069160 Title: Could not calculate the upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1069160/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
