Debian に Pulseaudio をインストールできない

不明な理由により、より多くの依存関係の問題が発生しました。今回PulseaudioはDebian 8.6 Jessie。

出力

The following packages have unmet dependencies:
 pulseaudio : Depends: libpulse0 (= 5.0-13) but 7.1-2~bpo8+1 is to be installed
              Depends: pulseaudio-utils but it is not going to be installed
              Recommends: pulseaudio-module-x11 but it is not going to be installed
              Recommends: rtkit but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

源泉

deb http://ftp.ca.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.ca.debian.org/debian/ jessie main contrib non-free

deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free

deb http://ftp.ca.debian.org/debian/ jessie-updates main contrib non-free
deb-src http://ftp.ca.debian.org/debian/ jessie-updates main contrib non-free

deb http://ftp.ca.debian.org/debian/ jessie-backports main contrib non-free

APTキャッシュポリシー

Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://repository.spotify.com/ stable/non-free amd64 Packages
     release v=0.4,o=Spotify LTD,a=stable,n=stable,l=Spotify Public Repository,c=non-free
     origin repository.spotify.com
 500 http://ftp.ca.debian.org/debian/ jessie-backports/non-free Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie-backports/main Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie-backports/contrib Translation-en
 100 http://ftp.ca.debian.org/debian/ jessie-backports/non-free amd64 Packages
     release o=Debian Backports,a=jessie-backports,n=jessie-backports,l=Debian Backports,c=non-free
     origin ftp.ca.debian.org
 100 http://ftp.ca.debian.org/debian/ jessie-backports/contrib amd64 Packages
     release o=Debian Backports,a=jessie-backports,n=jessie-backports,l=Debian Backports,c=contrib
     origin ftp.ca.debian.org
 100 http://ftp.ca.debian.org/debian/ jessie-backports/main amd64 Packages
     release o=Debian Backports,a=jessie-backports,n=jessie-backports,l=Debian Backports,c=main
     origin ftp.ca.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie-updates/non-free Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie-updates/main Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie-updates/contrib Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie-updates/non-free amd64 Packages
     release o=Debian,a=stable-updates,n=jessie-updates,l=Debian,c=non-free
     origin ftp.ca.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie-updates/contrib amd64 Packages
     release o=Debian,a=stable-updates,n=jessie-updates,l=Debian,c=contrib
     origin ftp.ca.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie-updates/main amd64 Packages
     release o=Debian,a=stable-updates,n=jessie-updates,l=Debian,c=main
     origin ftp.ca.debian.org
 500 http://security.debian.org/ jessie/updates/non-free Translation-en
 500 http://security.debian.org/ jessie/updates/main Translation-en
 500 http://security.debian.org/ jessie/updates/contrib Translation-en
 500 http://security.debian.org/ jessie/updates/non-free amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=non-free
     origin security.debian.org
 500 http://security.debian.org/ jessie/updates/contrib amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=contrib
     origin security.debian.org
 500 http://security.debian.org/ jessie/updates/main amd64 Packages
     release v=8,o=Debian,a=stable,n=jessie,l=Debian-Security,c=main
     origin security.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie/non-free Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie/main Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie/contrib Translation-en
 500 http://ftp.ca.debian.org/debian/ jessie/non-free amd64 Packages
     release v=8.6,o=Debian,a=stable,n=jessie,l=Debian,c=non-free
     origin ftp.ca.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie/contrib amd64 Packages
     release v=8.6,o=Debian,a=stable,n=jessie,l=Debian,c=contrib
     origin ftp.ca.debian.org
 500 http://ftp.ca.debian.org/debian/ jessie/main amd64 Packages
     release v=8.6,o=Debian,a=stable,n=jessie,l=Debian,c=main
     origin ftp.ca.debian.org
Pinned packages: