[Bug 797673] Re: upgrade from Ubuntu 10.10 to 11.0.4 64bit is halted

[RedSingularity]

You are getting an error in the main.log 'No Sockets found in
/var/run/screen/S-root.' so the error output is not in there.

Can you attach a different main.log so I can have a look?
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https://bugs.launchpad.net/bugs/797673

Title:
  upgrade from Ubuntu 10.10 to 11.0.4 64bit is halted

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: update-manager

  When upgrading i'm getting the following error:

  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

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