0
votes
0answers
35 views

GPG Error:invalid signatures

I get an error when i tried to install synaptic manager from GUI tool library in Ubuntu12.04 The error is like this: GPG Error: http://extras.ubuntu.com precise Release: The following signatures are ...
1
vote
0answers
41 views

Gpg error without missing keys on synaptic

I have installed UbuntuGnome 13.10 and gnome-shell 3.10 on my notebook. I have added about 30 PPAs normally. If I don't add any other PPA the update runs perfectly. If I add even one more PPA , the ...
4
votes
3answers
3k views

Backup Software Sources

In Ubuntu 10.04, when I goto System > Administration > Software Sources and goto the Authentication tab, I can view all of my keys allowing me to download from third party sources. How would I back ...