Remova o ppa e atualize:
sudo sudo add-apt-repository --remove ferramroberto/java
sudo apt-get update
Estou executando o Ubuntu 11.10 em um host virtual. Eu tentei atualizar para uma versão mais recente, executando do-release-upgrade , mas o processo falha com o seguinte erro (s).
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Sources
Err http://ppa.launchpad.net precise/main amd64 Packages
Err http://ppa.launchpad.net precise/main i386 Packages
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Sources
404 Not Found
Err http://ppa.launchpad.net precise/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net precise/main i386 Packages
404 Not Found
Err http://ppa.launchpad.net precise/main Translation-en
Err http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en
Fetched 0 B in 0s (0 B/s)
Error during update
A problem occurred during the update. This is usually some sort of
network problem, please check your network connection and retry.
W:Failed to fetch
http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/precise/main/source/Sources
404 Not Found
, W:Failed to fetch
http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/precise/main/binary-amd64/Packages
404 Not Found
, W:Failed to fetch
http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/precise/main/binary-i386/Packages
404 Not Found
, E:Some index files failed to download. They have been ignored, or
old ones used instead.
Restoring original system state
Remova o ppa e atualize:
sudo sudo add-apt-repository --remove ferramroberto/java
sudo apt-get update