Can't install MATE 1.20 on Ubuntu 16.04
3298
How do I resolve unmet dependencies after adding a PPA?
30571
E: Package 'libpng12-0' has no installation candidate [ubuntu 16.10 Gnome]
8047
Ubuntu Touch Install Problem
124619
Ubuntu 16: google-chrome-stable : Depends: libappindicator1 but it is not going to be installed
9322
Software Updater Issue 16.04
107548
Where can I download Ubuntu 16.04?
61719
Libpng12 needed for 17.10
25678
How to do a minimal install of 20.04?
131338
How do I deal with unknown installation error code -505?
123298
Trying to get Sims 4 to work on Ubuntu 16.04
32220
How to resolve Unmet dependencies error?
109277
Can't Add ppa:x2go/stable
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
58376
Ubuntu Touch install syntax error
140850
Why does do-release-upgrade on Xubuntu running version 18.04 not offer to update to 20.04.1?
63176
How can I update to Ubuntu 21.04?
20472
How do I enable the "partner" repository?