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[Raoul Bhatia <raoul@xxxxxxxxx>]

Public bug reported:

> # a2enmod mpm_prefork
> Considering conflict mpm_event for mpm_prefork:
> Considering conflict mpm_worker for mpm_prefork:
> Considering conflict mpm_itk for mpm_prefork:
> ERROR: Module mpm_itk is enabled - cannot proceed due to conflicts. It needs to be disabled first!

/usr/share/doc/libapache2-mpm-itk/README.Debian states, that mpm_itk is
an "addon" to prefork, however, if mpm_itk is enabled, I failed to
"a2enmod mpm_prefork".

System: Ubuntu 14.04
> # cat /etc/lsb-release
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=14.04
> DISTRIB_CODENAME=trusty
> DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"

Apache2 Version 
> #  dpkg -l | grep apache2
> ii  apache2                              2.4.7-1ubuntu4                      amd64        Apache HTTP Server
> ii  apache2-bin                          2.4.7-1ubuntu4                      amd64        Apache HTTP Server (binary files and modules)
> ii  apache2-data                         2.4.7-1ubuntu4                      all          Apache HTTP Server (common files)
> ii  apache2-mpm-prefork                  2.4.7-1ubuntu4                      amd64        transitional prefork MPM package for apache2
> ii  apache2-utils                        2.4.7-1ubuntu4                      amd64        Apache HTTP Server (utility programs for web servers)
> ii  libapache2-mod-php5                  5.5.9+dfsg-1ubuntu4                 amd64        server-side, HTML-embedded scripting language (Apache 2 module)
> ii  libapache2-mod-xsendfile             0.12-2                              amd64        Serve large static files efficiently from web applications
> ii  libapache2-mpm-itk                   2.4.6-01-1                          amd64        multiuser module for Apache

Cheers,
Raoul

PS: libapache2-mpm-itk is "out of sync" with apache2 (2.4.6 vs 2.4.7). A
more recent release can be found at http://mpm-itk.sesse.net/ - maybe it
is worth having a look.

** Affects: apache2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1310279

Title:
  Enabling mpm_prefork: ERROR: Module mpm_itk is enabled - cannot
  proceed due to conflicts. It needs to be disabled first!

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