14.04 upgrade not appearing on update manager
19288
Update manager doesn't offer an upgrade to the new release
119595
Is it necessary to upgrade to 14.04 LTS or can I stand in 12.04 LTS forever with no problem?
12614
Upgrade problem
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
140771
Can't update Developer Tools on Mojave
13970
Why am I not getting the Ubuntu 18.04 upgrade?
30754
Cannot update: "No available releases found"
44209
Problem with update-manager: No module named 'apt_pkg' in Ubuntu 13.10, having installed Python 3.4 on /usr/local/lib
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
148872
I can't select updates in Update Manager
28650
`apt-get update` cannot find Ubuntu servers
144172
How to upgrade to a point release from the same base release (12.04 to 12.04.03)
52190
How and when is old-releases.ubuntu.com updated?
101714
Is there any way to roll back the most recent upgrade?
149428
How do I refresh the package list?
8353
How do I access my software updater if it doesn't display anywhere?
9901
How to upgrade from 18.10 to 19.10, using the command line?