Experimente os seguintes comandos
$ sudo apt-get clean
$ sudo mv / var / lib / apt / listas / tmp
$ sudo mkdir -p / var / lib / apt / listas / parcial
$ sudo apt-get clean
$ sudo apt-get update
O seguinte erro ocorre ao executar o apt-get update:
A error occurred during the signature verification.
The repository is not updated and the previous index files will be used.
GPG error: http://za.archive.ubuntu.com precise Release.
Failed to fetch http://za.archive.ubuntu.com/precise/Release
Estou executando a atualização a partir de uma nova instalação. A única mudança de configuração que fiz foi mudar a rede do DHCP para a estática.
Aqui está a saída de erro do comando apt-get update:
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_main_source_Sources Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_restricted_source_Sources Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_universe_source_Sources Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_multiverse_source_Sources Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_restricted_binary-i386_Packages Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_universe_binary-i386_Packages Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/za.archive.ubuntu.com_ubuntu_dists_precise_multiverse_binary-i386_Packages Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.
Aqui está o meu arquivo /etc/apt/sources.list:
#
# deb cdrom:[Ubuntu-Server 12.04.5 LTS _Precise Pangolin_ - Release i386 (20140806.1)]/ precise main restricted
#deb cdrom:[Ubuntu-Server 12.04.5 LTS _Precise Pangolin_ - Release i386 (20140806.1)]/ precise main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://za.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://za.archive.ubuntu.com/ubuntu/ precise main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://za.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://za.archive.ubuntu.com/ubuntu/ precise-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://za.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://za.archive.ubuntu.com/ubuntu/ precise universe
deb http://za.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://za.archive.ubuntu.com/ubuntu/ precise-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://za.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://za.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ precise-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
## or updates from the Ubuntu security team.
deb http://za.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu precise partner
# deb-src http://archive.canonical.com/ubuntu precise partner
## Uncomment the following two lines to add software from Ubuntu's
## 'extras' repository.
## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
# deb http://extras.ubuntu.com/ubuntu precise main
# deb-src http://extras.ubuntu.com/ubuntu precise main
Experimente os seguintes comandos
$ sudo apt-get clean
$ sudo mv / var / lib / apt / listas / tmp
$ sudo mkdir -p / var / lib / apt / listas / parcial
$ sudo apt-get clean
$ sudo apt-get update