Ubuntu 12.04 LTS updating
2670
Why is "No new release found" when upgrading from a LTS to the next?
140470
How do I update kernel to the latest mainline version?
41964
Where is the update to 14.04.1 in update-manager?
11556
Can I smoothly upgrade from one LTS to next LTS release?
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager
113379
Updating the repository isn't working
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
108670
Daily Ubuntu base update
24165
Upgrade to version newer than repositories
63232
How to update kernel to the latest mainline version without any Distro-upgrade?
32829
One single command to update everything in Ubuntu?
63278
Update Linux Subsystem on Windows (Ubuntu) to 16.04
13970
Why am I not getting the Ubuntu 18.04 upgrade?
1520
How to install software or upgrade from an old unsupported release?
66915
How to request a package upgrade in the next Ubuntu release
35973
Ways to update Ubuntu (debian-based distros) offline