Thank you for your reply. Your system has been configured to not update to newer releases expect LTS ones. Could you try replacing the lts by normal in the file /etc/update-manager/release-upgrades (either by opening with gksudo gedit or graphically with the software and updates tool) and try to upgrade again? Thanks in advance.
Thank you for your reply. Your system has been configured to not update to newer releases expect LTS ones. Could you try replacing the lts by normal in the file /etc/update- manager/ release- upgrades (either by opening with gksudo gedit or graphically with the software and updates tool) and try to upgrade again? Thanks in advance.