*** This bug is a duplicate of bug 1263540 ***
https://bugs.launchpad.net/bugs/1263540
Have installed several fresh 14.04 and 14.04.1 LTS x64 servers straight
off the iso image in the past few weeks, and this has presented itself
on all of them.
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https://bugs.launchpad.net/bugs/1366332
Title:
Apt-get reports NO_PUBKEY gpg error for keys that are present in
trusted.gpg
Status in “apt” package in Ubuntu:
Confirmed
Bug description:
Ubuntu 14.04
apt 1.0.1ubuntu2.1
'apt-get update' has started showing several warnings like the
following, even though the keys are present:
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
sudo apt-key clean didn't help
The only ultimate solution was to remove all the keys from
/etc/apt/trusted.gpg.d and run
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys KEY
for each key that was missing.
Here is a reference bug for 13.10
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1263540
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