Eu tentei procurar todos os fóruns de problemas de atualização do Ubuntu, mas não consigo encontrar nada que funcione. Eu não consigo descobrir como corrigir o problema onde ele continua dizendo que os pacotes ou arquivos com Zesty não podem ser encontrados. Abaixo copiei o código que recebo quando digito sudo apt-get update .
Ign:1 http://archive.ubuntu.com/ubuntu zesty InRelease
Hit:2 http://ppa.launchpad.net/fenics-packages/fenics/ubuntu zesty InRelease
Ign:3 http://archive.ubuntu.com/ubuntu zesty-updates InRelease
Ign:4 http://archive.ubuntu.com/ubuntu zesty-backports InRelease
Ign:5 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty InRelease
Ign:6 http://archive.ubuntu.com/ubuntu zesty-security InRelease
Err:7 http://archive.ubuntu.com/ubuntu zesty Release
404 Not Found [IP: 91.189.88.152 80]
Ign:8 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty Release
Err:9 http://archive.ubuntu.com/ubuntu zesty-updates Release
404 Not Found [IP: 91.189.88.152 80]
Err:10 http://archive.ubuntu.com/ubuntu zesty-backports Release
404 Not Found [IP: 91.189.88.152 80]
Err:11 http://archive.ubuntu.com/ubuntu zesty-security Release
404 Not Found [IP: 91.189.88.152 80]
Ign:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Ign:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Ign:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Ign:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Ign:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Err:12 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main i386 Packages
404 Not Found
Ign:13 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all Packages
Ign:14 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 Packages
Ign:15 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en
Ign:16 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main Translation-en_US
Ign:17 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main all DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main amd64 DEP-11 Metadata
Ign:19 http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty/main DEP-11 64x64 Icons
Reading package lists... Done
E: The repository 'http://archive.ubuntu.com/ubuntu zesty Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://ppa.launchpad.net/ubuntu-audio-dev/ppa/ubuntu zesty 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: The repository 'http://archive.ubuntu.com/ubuntu zesty-updates Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-backports Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-security Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
O fim de vida de 17.04 foi 13 de janeiro de 2018. Os repositórios foram movidos para um local diferente e devem ser acessados de forma diferente.
Você deve atualizar para 17.10 ou instalar uma versão de suporte de longo prazo como 16.04. Então você pode continuar com o que você estava tentando fazer.