Ubuntu: Package ubuntu-release-upgrader does not exist


I got this error when I tried to upgrade Ubuntu 12.04 to 12.10 from the Update Manager.

Package ubuntu-release-upgrader does not exist

Is there anything can be done to fix this?


It sounds like you're trying to install the package by that name. Whether or not you are, the problem will likely be solved if you install ubuntu-release-upgrader-core instead:

sudo apt-get install ubuntu-release-upgrader-core

That's the package that gives you what you need to upgrade using the do-release-upgrade utility. There is no installable package called just ubuntu-release-upgrader.

This applies upgrades involving currently supported upgrades as well, such as 12.04 to 14.04 and 14.04 to 16.04.

To be specific, ubuntu-release-upgrader is a source package. Source packages can build one or more binary packages, and sometimes one of them has the same name as the source package, but not always. As that Launchpad page shows, the binary packages it provides are currently python3-distupgrade, ubuntu-release-upgrader-core, ubuntu-release-upgrader-gtk, ubuntu-release-upgrader-qt. See also the binary package database. Note that the do-release-upgrade executable is provided by ubuntu-release-upgrader-core.

I'm not sure if this would have helped, as you wouldn't necessarily have known the package that provides do-release-upgrade was hte one you needed... but for general information about finding what package you need to use a command, see How do I find the package that provides a file?

It can be useful to install available updates to your system before attempting to upgrade it to a new release:

sudo apt-get update  sudp apt-get upgrade  

One of the benefits of this is that if something goes wrong, it may be easier for you to figure out than during the release upgrade.

If after installing ubuntu-release-upgrader-core and updating most of the packages on your system as shown above (which will automatically include that one) you still have problems--or if you would have to upgrade through multiple releases to get where you want to go--then you should consider following Suhaib's advice to attempt upgrading from the installer, or perhaps even offloading all your documents and important files, wiping the disk, and starting from scratch.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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