[Bug 1001583] [NEW] cannot calculate the upgrade to 11.04

[Launchpad Bug Tracker]

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Turu update manager, I tried to upgrade my laptop top 11.04.

But, I meet the the next error message.

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:

E: Error, pkgProblemResolver::Resolve generated breaks, this may be
cause by held packages.

This can be caused by:
* Upgrading to a pre-lease 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 files /var/log/dist-upgrade/ in the
bug report.

Could you investigate my case?

Thanks,
Charles

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

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cannot calculate the upgrade to 11.04
https://bugs.launchpad.net/bugs/1001583
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