Ok, this can be closed. After a little research I found out, that packages on hold can prevent the upgrade process and I immediately checked if there are any hold packages. grub-common was on hold and after I changed it to install, the upgrade works.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993836 Title: do-release-upgrade from 10.04.4 to 12.04 doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager-core/+bug/993836/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
