*** This bug is a duplicate of bug 221023 *** https://bugs.launchpad.net/bugs/221023
$ sudo apt-get install update-manager-core -- installed correctly but then after a while: $ sudo do-release-upgrade -d -m desktop the only warning on the stdin: WARNING: Failed to read mirror file it stops on: Calculating the changes Your system is up-to-date There are no upgrades available for your system. The upgrade will now be canceled. Do you want to start the upgrade? A fatal error occured 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 aborts now. Your original sources.list was saved in /etc/apt/sources.list.distUpgrade. Traceback (most recent call last): File "/tmp/tmpOyIw3S/hardy", line 60, in ? app.run() File "/tmp/tmpOyIw3S/DistUpgradeController.py", line 1550, in run self.fullUpgrade() File "/tmp/tmpOyIw3S/DistUpgradeController.py", line 1513, in fullUpgrade if not self.askDistUpgrade(): File "/tmp/tmpOyIw3S/DistUpgradeController.py", line 818, in askDistUpgrade self.cache.requiredDownload) File "/tmp/tmpOyIw3S/DistUpgradeViewText.py", line 170, in confirmChanges print twrap(self.confirmChangesMessage) AttributeError: 'DistUpgradeViewText' object has no attribute 'confirmChangesMessage' ** Attachment added: "the logs asked by do-release-upgrade error" http://launchpadlibrarian.net/14016597/dist-upgrade.log.tar.gz -- AttributeError: 'DistUpgradeViewGtk' object has no attribute 'confirmChangesMessage' https://bugs.launchpad.net/bugs/224161 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs