package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steven Pemberton]

Failed while updating.

https://bugs.launchpad.net/ubuntu/+source/samba4/+bug/988509 says that this bug is fixed, but it apparently isn't.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: samba4 4.0.0~alpha18.dfsg1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
AptOrdering:
 openssh-server: Install
 ssh-import-id: Install
 samba4: Configure
 openssh-server: Configure
 ssh-import-id: Configure
Architecture: amd64
Date: Tue May 22 13:36:53 2012
DuplicateSignature:
 Setting up samba4 (4.0.0~alpha18.dfsg1-4ubuntu2) ...
 Administrator password will be set randomly!
 ProvisioningError: guess_names: 'realm =' was not specified in supplied /etc/samba/smb.conf. Please remove the smb.conf file and let provision generate it
 dpkg: error processing samba4 (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: samba4
Title: package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-04-27 (25 days ago)

[Jelmer Vernooij (jelmer)]

See the bug description there - this bug is fixed, but the fix is not in 12.04.

[Jelmer Vernooij (jelmer)]

Sorry you're hitting this. The server side of the Samba 4 package is still experimental but this is a silly reason for it to break.

FWIW I've nominated the fix for #988509 for backporting to precise. It might take a while for this to land in precise-updates though.