Could not determine the upgrade
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
50810
No upgrade available for 19.04 from 18.10
86777
Distribution upgrade problem "No new release found"
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
148872
I can't select updates in Update Manager
2670
Why is "No new release found" when upgrading from a LTS to the next?
26376
Kept back upgrade of fwupd
120229
Understanding various update and upgrade commands
97346
Is it possible to skip releases during an upgrade?
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
48809
"The upgrade has aborted" error, how to proceed?
56282
16.04 LTS upgrade alert- How to handle it?
1520
How to install software or upgrade from an old unsupported release?
30754
Cannot update: "No available releases found"
19288
Update manager doesn't offer an upgrade to the new release
8353
How do I access my software updater if it doesn't display anywhere?