I have just installed Ubuntu 12.04 and I added some repo, and when I did apt-get update, I got missing gpg key.
Following command seems to doesn't work for me:
apt-get update 2> /tmp/keymissing; for key in $(grep "NO_PUBKEY" /tmp/keymissing |sed "s/.*NO_PUBKEY //"); do echo -e "\nProcessing key: $key"; gpg --keyserver subkeys.pgp.net --recv $key && sudo gpg --export --armor $key | apt-key add -; done
How to fix this problem?
I liked this solution, re-download the missing keys from the Ubuntu key server.
For Ubuntu
In my case
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net precise
Release: The following signatures couldn't be verified because the public key is not available:
NO_PUBKEY 2EA8F35793D8809A
Here is the command to add the missing key mentioned in the error message.
sudo apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 2EA8F35793D8809A
So I take the missing key 2EA8F35793D8809A and ask the keyserver.ubuntu.com to added it to the list of keys I have in apt.
For linux mint
Your key server is slightly different keyserver.linuxmint.com
sudo apt-key adv --recv-key --keyserver keyserver.linuxmint.com "missing key"
Alternative key servers to try
keyserver.ubuntu.com
There is a software called as Y PPA manager It can help fix GPG keys errors.
Y PPA manager
To install -
sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install y-ppa-manager
Once you install it start it ,then go to advance and select "import all missing GPG keys"
The automatic download using apt-key adv --recv-keys may not work behind a firewall.
In this case, open the webpage of Ubuntu Key Server in your web browser and search for the string 0x<hexadecimal code of your missing key>.
Open the link in the pub section. Save the key contents (from -----BEGIN PGP PUBLIC KEY BLOCK----- to -----END PGP PUBLIC KEY BLOCK-----) as a file.
Then run:
sudo apt-key add <file-with-saved-key>
Source: http://opensourceforgeeks.blogspot.in/2013/04/w-gpg-error-httpppalaunchpadnet-precise.html
first enter the following command in the terminal
sudo rm /var/lib/apt/lists/* -vf
then update your system by entering the following command in the terminal
sudo apt-get update && sudo apt-get upgrade
after this there should be no errors and everything should work fine.
to this error message occuring after adding a new repository and updating repository list. This is due to a server which address is no more valid. So just change the address to a good one.
Open the file ~/.gnupg/gpg.conf with a text editor.
In terminal: gedit ~/.gnupg/gpg.conf
then, in this file, find the following bold line (116th line) (which should be default as follow):
[...]
keyserver hkp://keys.gnupg.net
# keyserver mailto:pgp-public-keys@keys.nl.pgp.net
# keyserver ldap://keyserver.pgp.com
then add the following bold line, to finally give the following result:
(add # to the second line as follow to comment out the old address)
[...]
keyserver http://keyserver.ubuntu.com
#keyserver hkp://keys.gnupg.net
# keyserver mailto:pgp-public-keys@keys.nl.pgp.net
# keyserver ldap://keyserver.pgp.com
Save the file and try to update again:
In terminal: sudo apt-get update
Based on nelaar answer:
sudo apt-get update 2>&1 1>/dev/null | sed -ne 's/.*NO_PUBKEY //p' |
while read key; do
echo 'Processing key:' "$key"
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys "$key"
done
The script dumps all the errors into a temporary file and then loops through them, importing the missing keys.
sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install y-ppa-manager
Open Y PPA Manager From Dash
What worked for me was to delete the key first and then reinstall. To achieve that I did the following:
root@ > ~: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 630239CC130E1A7FD81A27B140976EAF437D05B5
deleting with
root@ > ~: sudo apt-key del 630239CC130E1A7FD81A27B140976EAF437D05B5
Then, re-install by typing
root@ > ~: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 630239CC130E1A7FD81A27B140976EAF437D05B5
I wanted to automatically fix errors like this in a bash script. For anyone interested, this should do the trick:
sudo apt-get update 2> /tmp/keymissing
if [ -f /tmp/keymissing ]
then
for key in $(grep "NO_PUBKEY" /tmp/keymissing |sed "s/.*NO_PUBKEY //")
do
echo -e "\nProcessing key: $key"
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $key
sudo apt-get update
done
rm /tmp/keymissing
fi
The easiest way is simply:
sudo apt-key adv --refresh-keys --keyserver keyserver.ubuntu.com
Or if behind a proxy:
sudo apt-key adv --refresh-keys --keyserver keyserver.ubuntu.com --keyserver-options http-proxy=http://myproxy:123
(replace myproxy:123 with your actual proxy, of course)
I have encountered the same issue, by adding a ppa(ppa:nathandyer/vocal-stable), it broke my repositories. I was guided from the Author of Web Upd8, on how I can try to fix this, here are his steps that worked me.
Backup your .gpg keys, just in case that something goes wrong.
Lets make a folder in which we will house our backup in.
mkdir ~/gpg-backups
This backups all files in the /etc/apt/trusted.gpg.d/ folder.
sudo cp /etc/apt/trusted.gpg.d/*.* ~/gpg-backups/
Now, we will remove all the .gpg keys.
sudo rm /etc/apt/trusted.gpg.d/
sudo cp /etc/apt/trustdb.gpg ~/gpg-backups/
sudo rm /etc/apt/trustdb.gpg
in Software & Updates, on the "Authentication" tab, clicked "Restore Defaults
Install y-ppa manager to import all missing GPG keys
sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install y-ppa-manager
Reference:
Run wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
If you have something like this:
# aptitude update
...
Ign http://archive.canonical.com wily/partner Translation-en_US
Fetched 422 kB in 3s (130 kB/s)
W: GPG error: http://ubuntu.volia.net wily InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
First of all try:
# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
The output of last command can be:
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team_ubuntu_experiments.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team_ubuntu_gthumb.gpg': resource limit
So you need to go to /etc/apt/trusted.gpg.d/ and remove unused keys and then repeat apt-key adv and aptitude update
This problem occurred to me when I install 12.04 using German settings. The repository list is then using German mirror repositories by default. If that is the case you can edit the repository list and change all German mirror repositories to the Ubuntu standard repositories.
You can use following method:
sudo nano /etc/apt/sources.list
Search and replace in Nano using Alt-r
Search (to replace): /de.
Replace with: /
Replace All (Press A)
Save file Ctrl-x
Then update your system by entering the following command in the terminal:
sudo apt-get update && sudo apt-get upgrade
After this there should be no errors and everything should work fine.
