Software Updater

  1. Bug #772501
  2. Comment #0

Comment 0 for bug 772501

Revision history for this message
Tanmoy (tanmoylaskar) wrote : Upgrade to Natty fails with "could not calculate upgrade"

update-manager -d
extracting 'natty.tar.gz'
authenticate 'natty.tar.gz' against 'natty.tar.gz.gpg'
WARNING: Failed to read mirror file

Computing changes fails with the 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

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."

I have disabled all third party ppas in software sources. "main.log" and "apt.log" from /var/log/dist-upgrade are attached. "term.log" was empty.