package phpmyadmin 4:4.0.10-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Guglielmo Cinque]

MySQL is configured with root password, while phpmyadmin uses option "with no password"

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: phpmyadmin 4:4.0.10-1
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Sat Dec 13 21:25:54 2014
DuplicateSignature: package:phpmyadmin:4:4.0.10-1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2014-08-28 (106 days ago)
InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
PackageArchitecture: all
SourcePackage: phpmyadmin
Title: package phpmyadmin 4:4.0.10-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.