How to solve this upgrade error?
124649
E: Repository 'http://security.ubuntu.com/ubuntu bionic-security InRelease' changed its 'Suite' value from 'bionic-updates' to 'bionic-security'
144507
No facility exists in Update Manager to upgrade to a new version, why?
93942
How to fix "Failed to download repository information" error while updating?
249
How do I fix this "E: Type '*' is not known on line * in source list ..." update error?
107792
Update information outdated, "Failed to fetch cdrom"
19288
Update manager doesn't offer an upgrade to the new release
24165
Upgrade to version newer than repositories
13970
Why am I not getting the Ubuntu 18.04 upgrade?
130374
Error saying "unable to update ICE authority" while booting
128873
Windows update giving error 80070002 and manual update not working how to update?
36703
How do I upgrade from 12.10 to 13.04?
119920
Failed upgrade from Ubuntu 19.10 to 20.04 "Please update the microcode"
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
61473
Failed to fetch because of size mismatch error while upgrading
43648
Why isn't an upgrade to 20.04 from 18.04 available yet?
80233
Upgrade to 20.04 from 19.10 isn't available
76241
"no public key available" while upgrading using update-manager