(artful)eklebanow@localhost:~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 2836CB0A8AC93F7A 
[sudo] password for eklebanow: 
Executing: /tmp/apt-key-gpghome.N1ZQwUQ3Uk/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 2836CB0A8AC93F7A
gpg: keyserver receive failed: End of file