[Bug 946709] Re: Upgrade 11.10 ->12.04 fails with "Couldn't configure pre-depend libc6 for libnih1, probably a dependency cycle."

[Brian Murray]

** Changed in: update-manager (Ubuntu)
       Status: Incomplete => New

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Title:
  Upgrade 11.10 ->12.04 fails with "Couldn't configure pre-depend libc6
  for libnih1, probably a dependency cycle."

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

Bug description:
  Upgrading from Oneiric to Precise using "do-release-upgrade -d" fails
  (aborts before install) with:

  2012-03-04 17:03:43,749 DEBUG failed to SystemUnLock() (E:Not locked) 
  2012-03-04 17:03:44,214 ERROR Exception during pm.DoInstall()
  Traceback (most recent call last):
    File "/tmp/update-manager-bs5xvT/DistUpgradeView.py", line 203, in run
      res = pm.do_install(self.writefd)
  SystemError: E:Couldn't configure pre-depend libc6 for libnih1, probably a dependency cycle.
  2012-03-04 17:03:44,275 ERROR SystemError from cache.commit(): installArchives() failed
  2012-03-04 17:03:44,275 ERROR found exception: 'E:Couldn't configure pre-depend libc6 for libnih1, probably a dependency cycle.'


  $ apt-cache policy update-manager-core
  update-manager-core:
    Installed: 1:0.152.25.8
    Candidate: 1:0.152.25.8

  $ apt-cache policy update-manager
  update-manager:
    Installed: (none)
    Candidate: 1:0.152.25.8

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: update-manager-core 1:0.152.25.8
  ProcVersionSignature: Ubuntu 3.0.0-16.28-server 3.0.17
  Uname: Linux 3.0.0-16-server x86_64
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Sun Mar  4 17:04:13 2012
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to oneiric on 2012-03-04 (0 days ago)

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