I know this is asked often but nothing seems to work for me. Every time I try to update I get the following:
sudo apt-get update Get:1 http://archive.ubuntu.com precise Release.gpg Get:2 http://ppa.launchpad.net precise Release.gpg Get:3 http://archive.ubuntu.com precise Release Get:4 http://ppa.launchpad.net precise Release.gpg Get:5 http://ppa.launchpad.net precise Release Ign http://archive.ubuntu.com precise Release E: GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: NODATA 1 NODATA 2
The only way I can successfully execute
sudo apt-get update
is by removing ALL software sources (which is pointless).
Regardless of whatever software source I use (official ubuntu or some other PPA) I get the same errors.
So far I have tried:
- Changing the server from MAIN to some other . . . no joy
- The suggested fixes from here, here, here, and here.
Nothing seems to work. It seems that all my key data is missing and I can't figure out how to get it back.
Any help would be very appreciated !