无法更新ubuntu12.04: GPG错误:公钥不可用: NO_PUBKEY 3EF2666A18CEC0F6

Question

W: GPG error: http://download.opensuse.org  Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3EF2666A18CEC0F6
W: Failed to fetch http://ppa.launchpad.net/libreoffice/libreoffice-4-4/ubuntu/dists/precise/main/source/Sources  404  Not Found
W: Failed to fetch /ppa.launchpad.net/libreoffice/libreoffice-4-4/ubuntu/dists/precise/main/binary-amd64/Packages  404  Not Found
W: Failed to fetch /ppa.launchpad.net/libreoffice/libreoffice-4-4/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.

我试过sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3EF2666A18CEC0F6

但这不起作用

错误：

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.zpQPsXehS9 --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv-keys 3EF2666A18CEC0F6
gpg: requesting key 18CEC0F6 from hkp server keyserver.ubuntu.com
gpgkeys: key 3EF2666A18CEC0F6 not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0

我也试过

sudo rm /var/lib/apt/lists/* -vf

在那之后，我试着使用y-ppa-manager，但是仍然有错误

Answer 1

您可以通过更新管理器>设置>软件源代码和取消检查libre 4-4包来解决这一问题。