Signature problem in Update Manager

[the8thstar]

Hello there, I was running System Update and I ran into this interesting problem :


W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6AF0E1940624A220

What caused it? Can it be corrected? If so, how?

Thanks a lot for your help.

[drs305]

Launchpad and others are starting to sign their repositories and you need the key. Here is one way to import it:


gpg --keyserver keyserver.ubuntu.com --recv 6AF0E1940624A220
gpg --export --armor 6AF0E1940624A220 | sudo apt-key add -
sudo apt-get update

[the8thstar]

Here is what I got :


the8thstar@the8thstar-laptop:~$ sudo gpg --keyserver keyserver.ubuntu.com --recv 6AF0E1940624A220
[sudo] password for the8thstar:
gpg: WARNING: unsafe ownership on configuration file `/home/the8thstar/.gnupg/gpg.conf'
gpg: keyring `/home/the8thstar/.gnupg/secring.gpg' created
gpg: external program calls are disabled due to unsafe options file permissions
gpg: keyserver communications error: general error
gpg: keyserver receive failed: general error
the8thstar@the8thstar-laptop:~$ gpg --export --armor 6AF0E1940624A220 | sudo apt-key add -
gpg: WARNING: nothing exported
gpg: no valid OpenPGP data found.

[drs305]

The permissions on your gpg.conf file may be too open. Run this to set the permissions on the file only for yourself:

chmod 600 $HOME/.gnupg/gpg.conf

[the8thstar]

Hmm, no, nothing changed. gpg.conf is empty by the way, apart from this:


# FILE CREATED BY SEAHORSE

[drs305]

Perhaps you will have better luck importing the key in the traditional manner. Here is the link to the Launchpad page on how to add the keys:
https://help.launchpad.net/Packaging/PPA#keys?action=show&redirect=PPAKeys

Read the section: Installing Software from a PPA

[the8thstar]

I don't think I'll try that simply because I don't even know what app is causing the message to show up in the first place.

[forger]

Use this:
Update your Launchpad PPA repositories and apt keys

By the way, you SHOULD NOT use sudo and gpg as you did, that's why you got that error and that warning.

[the8thstar]

Excellent how-to. It saved my "lists"! Thanks a lot.

[ukblacknight]

Oops I posted in the wrong topic, was meant to say thanks in a different thread! The link forger supplied fixed my authentication errors anyways, thanks :).