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Software-updater
The software on this computer is up to date
However, kubuntu 17.10 is now available (you have 17.04)
upgrade
password
upgrade
Authentication failed
Authentication the upgrade failed. There may be a problem with the network or with the server

Was mache ich falsch?
Ich will 17.10 darauf spielen.

Paketlisten werden gelesen... Fertig
W: http://ppa.launchpad.net/graphics-driver…esty/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://de.archive.ubuntu.com/ubuntu/dists/zesty/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://de.archive.ubuntu.com/ubuntu/dist…ates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://de.archive.ubuntu.com/ubuntu/dist…orts/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://de.archive.ubuntu.com/ubuntu/dist…rity/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://apt.postgresql.org/pub/repos/apt/…pgdg/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg are ignored as the file is not readable by user '_apt' executing apt-key.

Ich habe kubuntu 17.10 drauf gemacht.
ok kann gelöscht sein