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Ubuntu 14 to 16.04 upgrade fail
mrlongshen
Member
hi. I got this error when upgrading to ubuntu 16.04
Err http://ppa.launchpad.net xenial/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net xenial/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net xenial/main Translation-en
Hit http://download.webmin.com sarge Release.gpg
Hit http://download.webmin.com sarge Release
Hit http://download.webmin.com sarge/contrib amd64 Packages
Hit http://download.webmin.com sarge/contrib i386 Packages
Err http://download.webmin.com sarge/contrib Translation-enErr http://download.webmin.com sarge/contrib Translation-en
Err http://download.webmin.com sarge/contrib Translation-en
Err http://download.webmin.com sarge/contrib Translation-en
Ign http://download.webmin.com sarge/contrib Translation-en
Fetched 0 B in 0s (0 B/s)Error during update
A problem occurred during the update. This is usually some sort of
network problem, please check your network connection and retry.W:Failed to fetch
http://ppa.launchpad.net/mc3man/trusty-media/ubuntu/dists/xenial/main/binary-amd64/Packages
404 Not Found
, W:Failed to fetch
http://ppa.launchpad.net/mc3man/trusty-media/ubuntu/dists/xenial/main/binary-i386/Packages
404 Not Found
, E:Some index files failed to download. They have been ignored, or
old ones used instead.
anyone know where to fix ?
Comments
you can ignore this one. because that repo is for trusty (14.04) only.
try to do apt-get update again
Still cannot.
Cannot proceed to do-release-upgrade
have you do apt-get update again? and is it still same error? because it's not possible, since "E:Some index files failed to download.They have been ignored, or old ones used instead."
Just remove the old PPA repositories that you've added, then rerun the upgrade?
How to remove it. I follow from digital ocean guide..
https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts
check file /etc/apt/sources.list or folder /etc/apt/sources.list.d for sources that might be added.. remove the ones which refer to the old ubuntu version and try again.
In general, there's no guarantee that PPAs (being unofficial) will support upgrades to new major versions of Ubuntu.
Means?
from my experience in the past, do-release-upgrade is failing because of apt and dpkg is not updated to latest one.
try to remove the old repos (as per suggested by @nobizzle), or just run apt-get update again.
then, run apt-get --only-upgrade install apt dpkg and do-release-upgrade
Ubuntu offers an easy way for their users to break their systems. People should know the implications of installing unofficial packages but Ubuntu developers think it's better to just make the process of doing so as easy as possible.
Thanks all. It works.