Not able to update Ubuntu 18.04
65
What can I do if a repository/PPA does not have a Release file?
120161
Ubuntu 19.04 problems install upgrades
1520
How to install software or upgrade from an old unsupported release?
85009
`apt update` failed on Debian Linux
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
128471
How do I update from 9.0.10 to 9.1.0?
146117
Update locked within terminal
46424
Cannot update software center repositories
3275
I can't seem to install Ubuntu 16.04.2
100135
What does "upgrade to 18.04" mean?
87236
How to upgrade Ubuntu 12.04 to 13.10?
59088
How to upgrade to a newer release of Ubuntu using the Live CD?
107792
Update information outdated, "Failed to fetch cdrom"
52190
How and when is old-releases.ubuntu.com updated?
140371
Update Ubuntu 10.04
113379
Updating the repository isn't working
100494
Update Manager asking me to update kernel but apt-get upgrade does not?