Upgrade from kubuntu 14.04 to 18.04
211
Can I skip over releases when upgrading?
31506
How do I update Ubuntu manually?
102559
How to install package from newer distribution?
1520
How to install software or upgrade from an old unsupported release?
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
2670
Why is "No new release found" when upgrading from a LTS to the next?
9901
How to upgrade from 18.10 to 19.10, using the command line?
60659
Install newer package version from trusty-backports
144172
How to upgrade to a point release from the same base release (12.04 to 12.04.03)
100494
Update Manager asking me to update kernel but apt-get upgrade does not?
107009
ubuntu 18.04 apt-get upgrade problem "redirection loop encountered."
51364
Ubuntu to Kubuntu switch!
63278
Update Linux Subsystem on Windows (Ubuntu) to 16.04
56225
Do I have to download both the 14.04 and the 14.04.1 versions of ubuntu?
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
13970
Why am I not getting the Ubuntu 18.04 upgrade?
119169
Should I upgrade to 14.04 LTS?