Aptitude показывает только ссылки, а не описания полного пакета

Недавно я установил Ubuntu 15.10, и теперь Aptitude показывает только ссылку на домашнюю страницу пакета, а не полное описание, которое оно показывало в моей предыдущей установке 14.04. Что я могу сделать, чтобы получить эти описания?

Выход apt-cache policy

stefan@desktop:~$ apt-cache policy 
Paketdateien:
 100 /var/lib/dpkg/status
     release a=now
 500 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu/ wily/main Translation-en
 500 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu/ wily/main i386 Packages
     release v=15.10,o=LP-PPA-graphics-drivers,a=wily,n=wily,l=Proprietary GPU Drivers,c=main
     origin ppa.launchpad.net
 500 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu/ wily/main amd64 Packages
     release v=15.10,o=LP-PPA-graphics-drivers,a=wily,n=wily,l=Proprietary GPU Drivers,c=main
     origin ppa.launchpad.net
 500 http://security.ubuntu.com/ubuntu/ wily-security/universe Translation-en
 500 http://security.ubuntu.com/ubuntu/ wily-security/restricted Translation-en
 500 http://security.ubuntu.com/ubuntu/ wily-security/multiverse Translation-en
 500 http://security.ubuntu.com/ubuntu/ wily-security/main Translation-en
 500 http://security.ubuntu.com/ubuntu/ wily-security/multiverse i386 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=multiverse
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/universe i386 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=universe
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/restricted i386 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=restricted
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/main i386 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=main
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/multiverse amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=multiverse
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/universe amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=universe
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/restricted amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=restricted
     origin security.ubuntu.com
 500 http://security.ubuntu.com/ubuntu/ wily-security/main amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-security,n=wily,l=Ubuntu,c=main
     origin security.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-backports/universe Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-backports/restricted Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-backports/multiverse Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-backports/main Translation-en
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/multiverse i386 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/universe i386 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/restricted i386 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/main i386 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/multiverse amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/universe amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/restricted amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 100 http://de.archive.ubuntu.com/ubuntu/ wily-backports/main amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-backports,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/universe Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/restricted Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/multiverse Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/main Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/multiverse i386 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/universe i386 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/restricted i386 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/main i386 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/multiverse amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/universe amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/restricted amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/main amd64 Packages
     release v=15.10,o=Ubuntu,a=wily-updates,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/universe Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily/universe Translation-de
 500 http://de.archive.ubuntu.com/ubuntu/ wily/restricted Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily/restricted Translation-de
 500 http://de.archive.ubuntu.com/ubuntu/ wily/multiverse Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily/multiverse Translation-de
 500 http://de.archive.ubuntu.com/ubuntu/ wily/main Translation-en
 500 http://de.archive.ubuntu.com/ubuntu/ wily/main Translation-de
 500 http://de.archive.ubuntu.com/ubuntu/ wily/multiverse i386 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/universe i386 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/restricted i386 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/multiverse amd64 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/universe amd64 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/restricted amd64 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
     release v=15.10,o=Ubuntu,a=wily,n=wily,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
Mit Pinning verwaltete Pakete:
stefan@desktop:~$ 

И вывод cat /etc/apt/sources.list |grep -v \#