I am running lucid, and would like to upgrade to precise. I have changed the settings in Update Manager to "Long term support releases only", but I only get the option "New Ubuntu release '10.10' is available". I thought it was possible to upgrade directly from one LTS to the next (i.e. go direct from lucid to precise). Is that right, or would I have to go through all the intermediate versions?
To add some extra details, running "lsb_release -a" gives: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 10.04.4 LTS Release: 10.04 Codename: lucid
In /etc/update-manager/release-upgrades I have Prompt=lts
Running do-release-upgrade gives the output:
Checking for a new ubuntu release
Failed Upgrade tool signature
Failed Upgrade tool
Failed to fetch Fetching the upgrade failed. There may be a network problem.