[Bug 995183] Re: package man-db 2.6.1-2 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/995183

Title:
  package man-db 2.6.1-2 failed to install/upgrade: subprocess installed
  post-installation script returned error exit status 1

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

Bug description:
  Error message popped up while I launched Terminal from keyboard
  shortcut.  Terminal launched pro7v8K9Mperly but this error message
  popped up.  I re-installed man-db 2.6.1-2 using Synaptics to see if
  this will resolve this random error.

  ProblemType: Package
  DistroRelease: Ubuntu 12.04
  Package: man-db 2.6.1-2
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
  Uname: Linux 3.2.0-24-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu7
  AptOrdering:
   knockd: Install
   knockd: Configure
  Architecture: i386
  Date: Sat May  5 07:18:29 2012
  DpkgTerminalLog:
   Unpacking knockd (from .../knockd_0.5-3ubuntu1_i386.deb) ...
   Processing triggers for man-db ...
   debconf: DbDriver "templatedb": /var/cache/debconf/templates.dat is locked by another process: Resource temporarily unavailable
   dpkg: error processing man-db (--unpack):
    subprocess installed post-installation script returned error exit status 1
  DuplicateSignature:
   Unpacking knockd (from .../knockd_0.5-3ubuntu1_i386.deb) ...
   Processing triggers for man-db ...
   debconf: DbDriver "templatedb": /var/cache/debconf/templates.dat is locked by another process: Resource temporarily unavailable
   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 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  SourcePackage: man-db
  Title: package man-db 2.6.1-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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