I'm running 17.10 and waited too long to upgrade... I'm trying to upgrade to 18.04
When I do a software update or apt-get update, it would fail with:
E: The repositoryubuntu artful-updates Release' does not have a Release file.
So, I updated the repository list to old-release.ubuntu.com. Now I'm able to to apt-get update, etc.
However, I cannot get the update manager to prompt me to update to the new release. It just says that everything is up to date. Also tried running check new release, but it fails:
check-new-release-gtk:30: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk
WARNING:root:timeout reached, exiting
Checked this topic, but none of the options there seem to be working for me either: Trouble upgrading from 16.04 to 18.04
Any ideas what I'm doing wrong?
Thanks in advance