[Bug 930027] Re: package man-db 2.6.0.2-3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Colin Watson]

*** This bug is a duplicate of bug 1372673 ***
    https://bugs.launchpad.net/bugs/1372673

Thanks for your report.  The basic problem here is that man-db's trigger
uses debconf to decide whether to update the manual page database, but
debconf is not always reliably usable in triggers.  I finally figured
out a simple way to avoid this problem, which I'm tracking as bug
1372673.  If you are still affected by this locally (which I realise is
unlikely in the case of some of the older bugs of this type), then
running "sudo dpkg --configure -a && sudo apt-get -f install" in a
terminal should normally be enough to get the package management system
back to a sensible state.

** This bug has been marked a duplicate of bug 1372673
   excessive debconf use when triggered

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https://bugs.launchpad.net/bugs/930027

Title:
  package man-db 2.6.0.2-3 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 1

Status in “man-db” package in Ubuntu:
  New

Bug description:
  package man-db 2.6.0.2-3 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 1

  ProblemType: Package
  DistroRelease: Ubuntu 12.04
  Package: man-db 2.6.0.2-3
  ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2
  Uname: Linux 3.2.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  Date: Fri Feb 10 11:56:56 2012
  DuplicateSignature:
   Unpacking replacement libc-bin ...
   Processing triggers for man-db ...
   debconf: DbDriver "config": could not open /var/cache/debconf/config.dat
   dpkg: error processing man-db (--unpack):
    subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
  SourcePackage: man-db
  Title: package man-db 2.6.0.2-3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: Upgraded to precise on 2012-02-09 (0 days ago)

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