Could not calculate upgrade from Maverick Meerkat to Natty Narwhal
- by xralf
I upgraded from Ubuntu Lucid Lynx to Maverick Meerkat with the following commands:
sudo apt-get update && sudo apt-get upgrade
sudo apt-get install update-manager-core
sudo vi /etc/update-manager/release-upgrades
and changed the last line to Prompt=normal
sudo do-release-upgrade -d
This upgrade was OK.
I decided to repeat the same steps and to upgrade Maverick Meerkat to Natty Narwhal.
It ended with this message:
Building data structures... Done
Calculating the changes
Calculating the changes
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade: Can
not mark 'xubuntu-desktop' for upgrade
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu
If none of this applies, then please report this bug against the
'update-manager' package and include the files in
/var/log/dist-upgrade/ in the bug report.
Restoring original system state
Aborting Reading package lists... Done Building dependency tree
Reading state information... Done Building data structures... Done
=== Command detached from window (Mon Nov 21 09:37:21 2011) ===
=== Command terminated with exit status 1 (Mon Nov 21 09:37:21 2011) ===
How can I correct it?
