I am trying to go from 11.04 to 11.10 (with the final intent of bringing my system up to 12.04), using sudo do-release-upgrade (or via the gui update manager) but continually receive this error message:
Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. 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
I know that this type of "Could not calculate the upgrade" error has been reported before, but I have tried all solutions I could find in the old bug reports and on the forums, but to no avail. I am following proper upgrade protocol (I've updated all packages, looked for broken dependencies, and cleaned up my file system). No errors are returned from
sudo apt-get upgrade or
sudo apt-get dist-update.
I tried the solution mentioned here (http://ubuntuforums.org/showthread.php?t=1859338), but that doesn't work. Removing libglib2-ruby1.8 as mentioned here (http://askubuntu.com/questions/109210/could-not-calculate-the-upgrade-on-upgrade-from-11-04-to-11-10) does not work either. I purged my PPA's (I only had one: ubuntugis) using PPA-purge, but that doesn't seem to help either. Running
Any help/ideas will be greatly appreciated!
All logs can be seen at the bug report I filed here: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1048400