Enquanto atualizo o Ubuntu via gerenciador de atualização, recebo o seguinte erro. Após este erro, o sistema é revertido para sua versão original.
W:Failed to fetch http://archive.canonical.com/dists/[distro]/partner/source/Sources 404 Not Found [IP: 91.189.92.191 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.
Meu sources.list
# deb cdrom:[Ubuntu 12.04.3 LTS Precise Pangolin - Release amd64 (20130820.1)]/ dists/precise/main/binary-i386/
# deb cdrom:[Ubuntu 12.04.3 LTS Precise Pangolin - Release amd64 (20130820.1)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu 12.04.3 LTS Precise Pangolin - Release amd64 (20130820.1)]/ precise main restricted
# See help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution.
deb http://in.archive.ubuntu.com/ubuntu quantal main restricted
deb-src http://in.archive.ubuntu.com/ubuntu quantal main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://in.archive.ubuntu.com/ubuntu quantal-updates main restricted
deb-src http://in.archive.ubuntu.com/ubuntu quantal-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu quantal universe
deb-src http://in.archive.ubuntu.com/ubuntu quantal universe
deb http://in.archive.ubuntu.com/ubuntu quantal-updates universe
deb-src http://in.archive.ubuntu.com/ubuntu quantal-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://in.archive.ubuntu.com/ubuntu quantal multiverse
deb-src http://in.archive.ubuntu.com/ubuntu quantal multiverse
deb http://in.archive.ubuntu.com/ubuntu quantal-updates multiverse
deb-src http://in.archive.ubuntu.com/ubuntu quantal-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
Abra Configurações do Sistema (também conhecido como Centro de Controle do Gnome), selecione Software & amp; Atualizações , selecione a guia Outro Software e desmarque o repositório Parceiros Canônicos .
Você também pode desmarcar Código-fonte na guia anterior.
Executar no terminal sudo apt-get update && sudo apt-get dist-upgrade .
Então você pode fazer o procedimento de atualização.