I am running Ubuntu 16.04 at work, and would like to upgrade to 18.04.
$ uname -a
Linux superbock 4.15.0-34-generic #37~16.04.1-Ubuntu SMP Tue Aug 28 10:44:06 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
When I get the upgrade windows as follows:
I click on Upgrade...
but nothing happens.
I tried running the update manager on the command line using
$ update-manager
When I click Update...
, it says on the console
Error checking for authorization com.ubuntu.release-upgrader.release-upgrade: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
I also tried using the do-release-upgrade
command:
$ sudo apt update
$ sudo apt upgrade
$ sudo apt dist-upgrade
$ sudo apt-get autoremove
$ sudo apt install update-manager-core
$ sudo do-release-upgrade
And I get the following :
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,258 kB]
Fetched 1,259 kB in 0s (0 B/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
gpg exited 1
Debug information:
gpg: Signature made Wed 29 Aug 2018 19:33:13 BST using RSA key ID C0B21F32
gpg: /tmp/ubuntu-release-upgrader-ahhadl1h/trustdb.gpg: trustdb created
gpg: BAD signature from "Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@ubuntu.com>"
Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server.
Not sure what is going on? Could someone advise on how to get this sorted?