package install-info 4.13a.dfsg.1-8ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Sangho Lee]

after installation of Ubuntu 12.04 on virtualbox, the error occured during update process.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: install-info 4.13a.dfsg.1-8ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
Date: Tue Nov 20 02:27:29 2012
DuplicateSignature:
 Setting up install-info (4.13a.dfsg.1-8ubuntu2) ...
 xmodmap: unable to open display ''
 dpkg: error processing install-info (--configure):
  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: texinfo
Title: package install-info 4.13a.dfsg.1-8ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)