Jean, thank you very much for help!
Now I have successfully installed Ubuntu 18.04!
It is perfect release: light and very quick OS.
But I see other bugs:
- in login manager, when I choose other graphical interface / environment,
after login into, I see empty screen only with background picture.
Thanks for your report.
Disregard dino99 comment, it is incorrect and misleading.
One of the reason of the upgrade failure are invalid entries in
/etc/sources.list that point to a no longer available release:
deb http://archive.ubuntu.com/ubuntu zesty main universe restricted multiverse
deb-src
Thank you very much for answer dino99.
I used gtkorphan.
But help me information only on this link
https://itsfoss.com/failed-to-download-repository-information-ubuntu-13-04/
Can you (=Ubuntu developers) repair in next update of Ubuntu all issues
with updates full resales and applications? It
use 'ppa-purge' with each installed ppa, to get genuine package version.
Then cleanup /etc/apt/sources.list to only use 'bionic' entries.
Also run 'gtkorphan' to purge old/un-needed packages; then reboot and
update again.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New =>
** Tags added: artful2bionic
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https://bugs.launchpad.net/bugs/1771852
Title:
In update-manager I see error "no internet connection", but it isn't
true. And update of Ubuntu is no
