php5 и phpmyadmin не устанавливаются

Я установил mysql, mysql-server, apache2 и многие другие. Возможно, я установил неправильные PPA или программы, которые вызывают эту проблему. В принципе, мне нужно запустить локальный сервер (например, для wordpress). Поэтому мне нужно localhost / phpmyadmin. Как-то работает localhost (он показывает, что это страница по умолчанию), но localhost / phpmyadmin не работает.

Когда я пытался sudo apt-get install phpmyadmin, он дает следующий вывод

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:

phpmyadmin : Depends: libapache2-mod-php5 but it is not going to be installed or
                       libapache2-mod-php5filter but it is not going to be installed or
                       php5-cgi but it is not going to be installed or
                       php5-fpm but it is not going to be installed or
                       php5 but it is not going to be installed
              Depends: php5-mysql but it is not going to be installed or
                       php5-mysqli but it is not installable or
                       php5-mysqlnd but it is not going to be installed
              Depends: php-gettext but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Когда я попытался sudo apt-get install php5 libapache2-mod-php5, Он дает следующую ошибку

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libapache2-mod-php5 : Depends: php5-common (= 5.5.9+dfsg-1ubuntu4.5) but 5.5.9+dfsg-1ubuntu4.14 is to be installed
                       Recommends: php5-cli but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Опять же, я попытался установить отсутствующий php-common на sudo apt-get install php5-commom, он показывает, что php5-common - это уже самая новая версия. Вот результат:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libapache2-mod-php5 : Depends: php5-common (= 5.5.9+dfsg-1ubuntu4.5) but 5.5.9+dfsg-1ubuntu4.14 is to be installed
                       Recommends: php5-cli but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
maddy@maddy-PC:/$ sudo apt-get install php5-common
Reading package lists... Done
Building dependency tree       
Reading state information... Done
php5-common is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.

Итак, ребята, мне нужна ваша помощь для установки phpmyadmin.

UPDATE Вот результат работы grep -R --include '*.list' '^deb ' /etc/apt

/etc/apt/sources.list:deb cdrom:[Ubuntu 14.04.3 LTS _Trusty Tahr_ - Beta amd64 (20150805)]/ trusty main restricted
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty main restricted
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-updates main restricted
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty universe
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-updates universe
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty multiverse
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-updates multiverse
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-backports main restricted universe multiverse
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-security main restricted
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-security universe
/etc/apt/sources.list:deb http://ubuntu.excellmedia.net/archive/ trusty-security multiverse
/etc/apt/sources.list:deb http://extras.ubuntu.com/ubuntu trusty main
/etc/apt/sources.list:deb http://deb.torproject.org/torproject.org trusty main
/etc/apt/sources.list.d/upubuntu-com-office-trusty.list:deb http://ppa.launchpad.net/upubuntu-com/office/ubuntu trusty main
/etc/apt/sources.list.d/google.list:deb http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/webupd8team-sublime-text-3-trusty.list:deb http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu trusty main
/etc/apt/sources.list.d/webupd8team-java-trusty.list:deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
/etc/apt/sources.list.d/google-chrome.list:deb http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/cordova-ubuntu-ppa-trusty.list:deb http://ppa.launchpad.net/cordova-ubuntu/ppa/ubuntu trusty main
/etc/apt/sources.list.d/webupd8team-tor-browser-trusty.list:deb http://ppa.launchpad.net/webupd8team/tor-browser/ubuntu trusty main
/etc/apt/sources.list.d/nodesource.list:deb https://deb.nodesource.com/node_5.x trusty main
/etc/apt/sources.list.d/ubuntu-wine-ppa-trusty.list:deb http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu trusty main

и вывод apt-cache policy php5-common

php5-common:
  Installed: 5.5.9+dfsg-1ubuntu4.14
  Candidate: 5.5.9+dfsg-1ubuntu4.14
  Version table:
 *** 5.5.9+dfsg-1ubuntu4.14 0
        100 /var/lib/dpkg/status
     5.5.9+dfsg-1ubuntu4.5 0
        500 http://ubuntu.excellmedia.net/archive/ trusty-updates/main amd64 Packages
        500 http://ubuntu.excellmedia.net/archive/ trusty-security/main amd64 Packages
     5.5.9+dfsg-1ubuntu4 0
        500 http://ubuntu.excellmedia.net/archive/ trusty/main amd64 Packages

UPDATE Вот результат работы aptitude search '?narrow(?installed, !?version(CANDIDATE))'

W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main amd64 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-amd64_Packages)
W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main i386 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-i386_Packages)
W: You may want to update the package lists to correct these missing files
i   google-chrome-stable            - The web browser from Google               
i   nodejs                          - Node.js event-based server-side javascript
i   oracle-java8-installer          - Oracle Java(TM) Development Kit (JDK) 8   
i   oracle-java8-set-default        - Set Oracle JDK 8 as default Java          
i   tor-browser                     - Tor Browser Bundle