Wednesday, April 30, 2014

Upgrading Ubuntu from 13.10 to 14.04 LTS

Hm… I tried once more to upgrade from Ubuntu 13.10 to 14.04 LTS, this time I also consulted pages at and

Again no success. I tried several variants of update-manager:

$ update-manager
$ update-manager -c
$ update-manager -d

The result is always the same, it says: “The software on your computer is up to date” without the expected addition “However, Ubuntu 14.04 is now available and you have 13.10”, and consequently without any Upgrade button.

Here is the content of my /etc/apt/sources (without comments):

deb saucy main restricted
deb-src saucy main restricted

deb saucy universe
deb-src saucy universe

deb saucy multiverse
deb-src saucy multiverse

deb saucy-security main restricted
deb-src saucy-security main restricted
deb saucy-security universe
deb-src saucy-security universe
deb saucy-security multiverse
deb-src saucy-security multiverse

deb saucy partner
deb-src saucy partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb saucy main
deb-src saucy main

deb saucy-updates restricted main multiverse universe

I am giving up for now. If somebody sees an explanation, please tell me.

Thanks to Gerd who pointed me to SK on <>_ which explained the `/etc/update-manager/release-upgrades file. I changed Prompt=lts to Prompt=normal. And yes, that was the solution. As a comment in file itself says: “Note that this option (lts) should not be used if the currently-running release is not itself an LTS release, since in that case the upgrader won’t be able to determine if a newer release is available.”


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