zerozero wrote:terminal sometimes doesn't echo my keys hence I can't see if password is correct!!
when you are typing the pw, the terminal never echoes it, it's a safety feature, it looks like nothing is getting inputted but it is.
andrew@laptopu400:~$ apt update && apt dist-upgrade
sudo: unable to resolve host laptopu400
this is another error

you have changed the computer name recently (or at least after install)?
see this >>
http://askubuntu.com/questions/59458/su ... -host-none and this >>
http://www.webupd8.org/2012/03/how-to-c ... me-in.html (that change has to be made in 2 places)
W: GPG error:
http://debian.linuxmint.com testing Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 07DC563D1F41B907
the GPG error is still present,
share please the output of
- Code: Select all
apt policy debian-archive-keyring deb-multimedia-keyring debian-multimedia-keyring
tried the links above and have manged to change hostnames in both files so the information is consistent.
However I did note that terminal threw up a couple of error messages while carrying out the instructions ....
andrew@laptopu400:~$ sudo gedit /etc/hostname
[sudo] password for andrew:
Gtk-Message: Failed to load module "canberra-gtk-module"
andrew@laptopu400:~$ gksu gedit /etc/hosts
Gtk-Message: Failed to load module "atk-bridge"
Gtk-Message: Failed to load module "canberra-gtk-module"
(gedit:7246): EggSMClient-WARNING **: Failed to connect to the session manager: None of the authentication protocols specified are supported
andrew@laptopu400:~$ gksu gedit /etc/hostname
Gtk-Message: Failed to load module "atk-bridge"
Gtk-Message: Failed to load module "canberra-gtk-module"
(gedit:7326): EggSMClient-WARNING **: Failed to connect to the session manager: None of the authentication protocols specified are supported
ALSO have pasted out put of the other command as requested ....
andrew@laptopu400:~$ apt policy debian-archive-keyring deb-multimedia-keyring debian-multimedia-keyring
debian-archive-keyring:
Installed: 2012.4
Candidate: 2012.4
Version table:
*** 2012.4 0
500
http://debian.linuxmint.com/incoming/ testing/main amd64 Packages
100 /var/lib/dpkg/status
deb-multimedia-keyring:
Installed: (none)
Candidate: 2012.05.10-dmo3
Version table:
2012.05.10-dmo3 0
500
http://debian.linuxmint.com/incoming/multimedia/ testing/main amd64 Packages
debian-multimedia-keyring:
Installed: 2010.12.26
Candidate: 2010.12.26
Version table:
*** 2010.12.26 0
100 /var/lib/dpkg/status
andrew@laptopu400:~$
Hope this helps.
Thanks again
Andrew