Hello everybody.
I'm still running Trisquel 7 on a Thinkpad L540, just trying to upgrade to
Trisquel 8. I've run:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get update
I get the following error message:
W: GPG-Fehler: http://archive.canonical.com precise Release: Die folgenden
Signaturen konnten nicht überprüft werden, weil ihr öffentlicher
Schlüssel nicht verfügbar ist: NO_PUBKEY 40976EAF437D05B5
What can I do? I have tried and re-installed trisquel-keyring but that didn't
help. How do I get the public key?
Thank you very much in advance.
Florian
