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Como corrigir o erro ao atualizar minha lista de pacotes no Ubuntu 16.04?

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Como corrigir o erro ao atualizar minha lista de pacotes no Ubuntu 16.04?

Recebo esse erro quando tento atualizar meuUbuntu 16.04. Já tentei algumas soluções mas nada funcionou até agora.

Erro:

W: http://archive.canonical.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-security/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: GPG error: http://extras.ubuntu.com/ubuntu precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
W: The repository 'http://extras.ubuntu.com/ubuntu precise Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: The repository 'http://ppa.launchpad.net/upubuntu-com/network/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/upubuntu-com/network/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

Depois de desmarcar alguns pacotes/repositórios indesejadosna seção de software e atualização, consegui me livrar de alguns erros, mas ainda existem alguns erros:

 The repository 'http://ppa.launchpad.net/upubuntu-com/network/ubuntu xenial Release' does not have a Release file.
 N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
 N: See apt-secure(8) manpage for repository creation and user configuration details.
 W: http://archive.canonical.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
 E: Failed to fetch http://ppa.launchpad.net/upubuntu-com/network/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
 E: Some index files failed to download. They have been ignored, or old ones used instead.

Depois de aplicar a soluçãofornecido abaixo (por Raphael), a maioria dos erros foi resolvida. Exceto estes erros:

 W: The repository 'http://ppa.launchpad.net/upubuntu-com/network/ubuntu xenial Release' does not have a Release file.
 N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
 N: See apt-secure(8) manpage for repository creation and user configuration details.
 E: Failed to fetch http://ppa.launchpad.net/upubuntu-com/network/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
 E: Some index files failed to download. They have been ignored, or old ones used instead.

Responder1

Você está usando, Xenialmas sources.listcontém links para Precise. Para corrigir isso,

  • Faça backup do seu atual sources.list:

    sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak

  • Crie um novo source.list:

    sudo nano /etc/apt/sources.list

  • Copie e cole o seguinte nele:

    deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse

  • Em seguida, no teclado pressione o seguinte:

    Ctrl+ Xentão Ye finalmente Enter.

  • Finalmente, tente atualizar suas fontes:

    sudo apt-get update

EDITAR:- O ppaerro é o que diz. Isso ppanão tem um arquivo de lançamento para Xenial. Para remover ppas, siga esta resposta emPergunte ao Ubuntu.

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