At Login says security update and package upgrade available but unable to install
2788
How do I free up more space in /boot?
11671
"Unable to locate package" while trying to install packages with APT
127852
How do I update a program installed from a manually-downloaded deb package?
80233
Upgrade to 20.04 from 19.10 isn't available
85724
Cannot update/get any packages. gedit not installed
13970
Why am I not getting the Ubuntu 18.04 upgrade?
154622
How do I resolve this installation error?
36104
"Software can't be installed or removed because the authentication service is not available. "
109677
How do I to resolve unmet dependencies to uninstall and reinstall package
109539
How can I perform an offline upgrade using Ubiquity on the installation disc?
107535
Unable to install software or update the system after half installed java
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
16186
Requires installation of untrusted packages?
135452
How do you see what packages are available for update
117852
"Package dependencies cannot be resolved" error when installing software
43917
What is the difference between apt-get update and upgrade?