Upgrade Desktop form 14.04 LTS "No new release found"
2670
Why is "No new release found" when upgrading from a LTS to the next?
144507
No facility exists in Update Manager to upgrade to a new version, why?
134786
Why doesn't Ubuntu ship an application, or the latest versions of some applications?
100963
How to only perform LTS upgrades?
157123
14.04 LTS No Dash / Launcher after update through Software Updater
119595
Is it necessary to upgrade to 14.04 LTS or can I stand in 12.04 LTS forever with no problem?
12578
How do I upgrade to a newer version of Ubuntu?
19288
Update manager doesn't offer an upgrade to the new release
155154
I am currently using 19.04 and I got "No new release found for 19.10"
66915
How to request a package upgrade in the next Ubuntu release
41519
What can I do if a package is not available on the newest version of Ubuntu (18.04) but is available on older versions?
122274
Release file for http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet
154072
Ubuntu 17.10 doesn't show up in update-manager
148872
I can't select updates in Update Manager
120229
Understanding various update and upgrade commands
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
123413
Will apt-get dist-upgrade upgrade my system to a newer version?