Ubuntu – Ubuntu Extras keyring error

aptgnupgrepositorysignatureupdate-manager

Recently I got lots of GPG errors and tried the following methods at various stages: 

  1. sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3E5C1192 

  2. sudo apt-get install -reinstall ubuntu-extras-keyring

    (For Ubuntu Extras only) 

  3. gpg –keyserver keyserver.ubuntu.com –recv 3E5C1192
gpg –export –armor 3E5C1192 | sudo apt-key add -
sudo apt-get update

  4. sudo aptitude -o Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update`  

  5. sudo -i   
apt-get clean
cd /var/lib/apt 
mv lists lists.old
mkdir -p lists/partial  
apt-get clean 
apt-get update

I again got BADSIG error for extras.ubuntu.com today. So, I'm really at a loss what's causing this error to occur time and again. I really want to solve this problem once and for all.

Best Answer

You can automatically import all missing GPG keys using:

sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install launchpad-getkeys
sudo launchpad-getkeys
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