GPG ERROR NO_PUBKEY：警告：以下软件包无法通过身份validation！
我刚刚收到一些关于GPG密钥的奇怪错误。 即我刚刚添加了ppa:ubuntu-toolchain-r/test并希望更新，之后我得到了这个：
W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192 W: GPG error: http://archive.canonical.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: GPG error: http://qgis.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 030561BEDD45F6C3 W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A040830F7FAC5991 W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A040830F7FAC5991 W: GPG error: http://archive.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: GPG error: http://archive.ubuntu.com trusty-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: GPG error: http://archive.ubuntu.com trusty-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
我试图以两种方式解决它（ 这里提供）
for key in 40976EAF437D05B5 3B4FE6ACC0B21F32 A040830F7FAC5991 030561BEDD45F6C3 16126D3A3E5C1192 ; do sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $key ; done
但这没有帮助（同样的错误一直伴随着相同的键）所以我试图这样做：
sudo add-apt-repository ppa:webupd8team/y-ppa-manager sudo apt-get update sudo apt-get install y-ppa-manager
但我得到了这个让我眼前一亮的东西：
Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: launchpad-getkeys libvte-common libvte9 python-keyring python-launchpadlib python-lazr.restfulclient python-lazr.uri python-oauth python-secretstorage python-simplejson python-vte python-wadllib xclip yad Suggested packages: python-gdata python-keyczar python-kde4 python-testresources python-secretstorage-doc The following NEW packages will be installed: launchpad-getkeys libvte-common libvte9 python-keyring python-launchpadlib python-lazr.restfulclient python-lazr.uri python-oauth python-secretstorage python-simplejson python-vte python-wadllib xclip y-ppa-manager yad 0 upgraded, 15 newly installed, 0 to remove and 29 not upgraded. Need to get 915 kB of archives. After this operation, 4,515 kB of additional disk space will be used. Do you want to continue? [Y/n] Y WARNING: The following packages cannot be authenticated! libvte-common libvte9 python-keyring python-lazr.uri python-simplejson python-wadllib python-oauth python-lazr.restfulclient python-launchpadlib python-secretstorage python-vte xclip Install these packages without verification? [y/N]
运行命令：
sudo apt-get update
对于报告为缺失的每个16个字符的密钥，请在替换密钥的情况下运行以下密钥：
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ABCDEFGH12345678