Can't install 3rd party software after 16.04
98511
16.04 Cannot install anything from Ubuntu Software center
29191
Upgrade to 18.04 from 17.10
44991
A lot of missing dependencies when I try to install all software
119943
Where can I find a repository for older unsupported releases?
49782
Installation type empty on 16.04 for a dual boot
46461
Unsupported software?
122790
Shutter is not getting installed in Ubuntu 16.04 due to unmet dependencies
3275
I can't seem to install Ubuntu 16.04.2
9723
How do I install software using the Ubuntu Software Center?
106253
How to install Ubuntu Software Center on Ubuntu Gnome 17.04?
110896
Package installation - Outdated repository
75976
Is it still possible to install Chromium as a deb-package on 20.04 LTS using some third-party repository?
20398
dpkg broken after 15.04 upgrade fail
151858
Unable to install Kompozer in Ubuntu 16.04
64509
Can't update from official repositories [Error 409]
109409
Cannot update/install other software after failing to install LibreOffice
28875
Installing applications from source