Quando executo a atualização do sudo apt-get, resulta no seguinte
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A1715D88E1DF1F24
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 551CE2FB4CBEDD5A
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1E9377A2BA9EF27F
Por googling eu vim a saber a chave está faltando, e pode ser obtido executando o seguinte comando com os números hexadecimais correspondentes
saikirangvr@ubuntu:~$ sudo gpg --keyserver subkeys.pgp.net --recv 551CE2FB4CBEDD5A
Mas eu não consegui consertar isso, pois isso me deu o erro
gpg: WARNING: unsafe ownership on configuration file '/home/saikirangvr/.gnupg/gpg.conf'
gpg: external program calls are disabled due to unsafe options file permissions
gpg: keyserver communications error: general error
gpg: keyserver receive failed: general error
Eu tentei muitas vezes, mas não consegui consertar. Eu estava atrás de um servidor proxy na minha faculdade e configurei o Ubuntu bem para usar por trás do proxy.
Depois de usar
sudo chown -R saikirangvr:saikirangvr /home/saikirangvr/.gnupg
o problema de propriedade insegura se foi, e deu o seguinte ....
sai@ubuntu:~/gpgpu-sim/ispass2009-benchmarks$ gpg --keyserver keyserver.ubuntu.com --recv 1E9377A2BA9EF27F
gpg: requesting key BA9EF27F from hkp server keyserver.ubuntu.com
gpgkeys: key 1E9377A2BA9EF27F not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
sai@ubuntu:~/gpgpu-sim/ispass2009-benchmarks$ gpg --keyserver subkeys.pgp.net --recv 1E9377A2BA9EF27F
gpg: requesting key BA9EF27F from hkp server subkeys.pgp.net
gpgkeys: key 1E9377A2BA9EF27F not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
o resultado da adição do ppa
sai@ubuntu:~$ sudo add-apt-repository ppa:nilarimogard/webupd8
[sudo] password for sai:
Error reading https://launchpad.net/api/1.0/~nilarimogard/+archive/webupd8: Couldn't resolve host 'launchpad.net'
ocorre o mesmo erro ao usar as teclas get da barra de lançamento
sai@ubuntu:~$ sudo launchpad-getkeys
Please wait... launchpad-getkeys is running an update so
it can detect the missing GPG keys
Trying to import all the missing keys
gpg: requesting key 4C9D234C from hkp server keyserver.ubuntu.com
gpgkeys: key 531EE72F4C9D234C not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
gpg: requesting key BA9EF27F from hkp server keyserver.ubuntu.com
gpgkeys: key 1E9377A2BA9EF27F not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
launchpad-getkeys has finished importing all missing GPG keys.
Try running sudo apt-get update - you shouldn't see any key
errors anymore
Qual é o problema? * Existe algum outro método para resolver isso como através da GUI * .......