Upgrade 12.04 to 14.04 problems

Petter Adsen petter at synth.no
Sat Jan 23 15:13:10 UTC 2016

On Sat, 23 Jan 2016 08:54:27 -0600
Jack McGee <jack at greendesk.net> wrote:

> I am trying to upgrade my desktop.
> First it did not find any new upgrades.
> So I edited
> |/etc/update-manager/release-upgrades and changed |
> |Prompt=never to Prompt-normal now when I do upgrade I get:
> ||jmcgee at jmcgee-desktop:/etc/cups/ppd$ sudo
> nano /etc/update-manager/release-upgrades
> jmcgee at jmcgee-desktop:/etc/cups/ppd$ do-release-upgrade -d Checking
> for a new Ubuntu release Err Upgrade tool signature 404 Not Found
> [IP: 80] Err Upgrade tool 404 Not Found [IP:
> 80] Fetched 0 B in 0s (0 B/s) WARNING:root:file
> 'quantal.tar.gz.gpg' missing Failed to fetch Fetching the upgrade
> failed. There may be a network problem.
> jmcgee at jmcgee-desktop:/etc/cups/ppd$ |

You should change Prompt to 'lts' when upgrading from one LTS release
to another. Also, 'do-release-upgrade -d' attempts to upgrade to a
development snapshot, in this case Xenial. You probably want to try
without the '-d'.


"I'm ionized"
"Are you sure?"
"I'm positive."

More information about the ubuntu-users mailing list