Mar 23, 2015
Enigmail on Thunderbird complains these days that it will soon require Gnupg version 2.
It’s probably not a good idea to deinstall Gnupg version 1 on Ubuntu 14.04 as that would remove a lot of other packages as well. Instead I just installed version 2 additionally:
sudo apt-get install gnupg2
That’s it! Enigmail found that new version automatically.