[Ubuntu-BD] Kubuntu Repo Signature problem

Shahriar Tariq shahriar at linux.org.bd
Sun Jan 25 09:45:58 GMT 2009

The problem goes back for about a month..

The problem is resulting for a series of events so I think it might be
useful to know in details to provide solutions.

First I switched to Ubuntu Main Repo server  from Bangladesh Repo server
(since there is no real Repo server in Bangladesh)

at first it worked fine for about a week or two. then I started getting

"The following signatures were invalid: BADSIG 40976EAF437D05B5"

so I tried removing the signature and adding it back

(removed the signature using source list on adept)

then tried to export the key

$gpg -recv-keys 40976EAF437D05B5
> gpg: can't open `40976EAF437D05B5'

I tried switching to different Repo server and apt-get update...

currently my repo server is directed to tw.. http://debian.nctu.edu.twintrepid

I can update & install packages (but understandably getting no

W: GPG error: http://debian.nctu.edu.tw intrepid Release: The following
> signatures couldn't be verified because the public key is not available:
> NO_PUBKEY 40976EAF437D05B5

any suggestions??

I wish google was more spot on the first time I was googling.. it did not
return any useful solutions.

today I found launchpad bug report on the same bad signature problem. there
are different solutions that worked for some while failed for others...

any way can anyone help me add the signature back?

Thanking you

Volunteer, Bangladesh Linux Users Alliance http://linux.org.bd

Marketing & Contents Officer, Ubuntu Bangladesh http://www.ubuntu-bd.org

Endorsement: আমাদের প্রযুক্তি ফোরাম http://forum.amaderprojukti.com/ and
মুক্ত.অর্গ http://mukto.org

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