então aqui está o meu problema, eu atualizo de vez em quando, mas desta vez é diferente, gera um erro:
W: Failed to fetch cdrom://Ubuntu-GNOME 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.2)/dists/trusty/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Ubuntu-GNOME 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.2)/dists/trusty/restricted/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch http://ppa.launchpad.net/sun-java-community-team/sun-java6/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/sun-java-community-team/sun-java6/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Espero que alguém possa ajudar, de alguma forma, obrigado.
Responder1
Abra Configurações do sistema.
Clique em Fontes de software.
Remova a verificação do cdrom.
Selecione a guia Outro software.
Remova as caixas de seleção do PPA sun-java.