1

Currently, when I run the Update Manager in 12.04.1 LTS , I get since some weels:

Screen shot

How can I update from this state?

Update

$ sudo apt-get update
Get:1 http://at.archive.ubuntu.com precise Release.gpg [198 B]
...
Hit http://at.archive.ubuntu.com precise-backports/universe Translation-en
Fetched 198 B in 1s (146 B/s)
Reading package lists... Done
W: GPG error: http://at.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key
false
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1 Answers1

1

To solve this problem , open terminal then try these commands :

sudo apt-get clean 
cd /var/lib/apt 
sudo mv lists lists.old 
sudo mkdir -p lists/partial 
sudo apt-get clean 
sudo apt-get update

Then try again to update your system .

nux
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