How can I upgrade lubuntu 14.04 to 15.04?
12578
How do I upgrade to a newer version of Ubuntu?
31506
How do I update Ubuntu manually?
20399
How do I upgrade from 14.04 LTS to 16.04.1 LTS?
75798
How to upgrade to the latest GNOME version?
21323
Where can I download the latest release of Ubuntu?
75380
upgrading glibc to a version at least 2.17 or higher in ubuntu 12.04 LTS?
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
11556
Can I smoothly upgrade from one LTS to next LTS release?
144891
Ubuntu has LTS and normal version now. Does Lubuntu have the same?
129223
Ubuntu upgrade from 17.04 to 18.04
19288
Update manager doesn't offer an upgrade to the new release
144662
How to get Gnome 3.14 on ubuntu 14.04
123413
Will apt-get dist-upgrade upgrade my system to a newer version?
45921
VLC will not install 14.04
2670
Why is "No new release found" when upgrading from a LTS to the next?
16428
Upgrade to the latest PHP version in ubuntu 16.04