Reading dependency.txt here i send the details of [origin: unknown] commented rows...
apt-cache policy libdrm2 libdrm2: Installato: 2.4.52+git20140121.46d451c9-0ubuntu0sarvatt~saucy Candidato: 2.4.52+git20140121.46d451c9-0ubuntu0sarvatt~saucy Tabella versione: *** 2.4.52+git20140121.46d451c9-0ubuntu0sarvatt~saucy 0 500 http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu/ saucy/main i386 Packages 100 /var/lib/dpkg/status 2.4.46-1ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main i386 Packages 2.4.46-1 0 500 http://archive.ubuntu.com/ubuntu/ saucy/main i386 Packages apt-cache policy libpython3.3-minimal libpython3.3-minimal: Installato: 3.3.2-7ubuntu3.1 Candidato: 3.3.2-7ubuntu3.1 Tabella versione: *** 3.3.2-7ubuntu3.1 0 500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main i386 Packages 500 http://archive.ubuntu.com/ubuntu/ saucy-security/main i386 Packages 100 /var/lib/dpkg/status 3.3.2-7ubuntu3 0 500 http://archive.ubuntu.com/ubuntu/ saucy/main i386 Packages apt-cache policy libpython3.3-stdlib libpython3.3-stdlib: Installato: 3.3.2-7ubuntu3.1 Candidato: 3.3.2-7ubuntu3.1 Tabella versione: *** 3.3.2-7ubuntu3.1 0 500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main i386 Packages 500 http://archive.ubuntu.com/ubuntu/ saucy-security/main i386 Packages 100 /var/lib/dpkg/status 3.3.2-7ubuntu3 0 500 http://archive.ubuntu.com/ubuntu/ saucy/main i386 Packages apt-cache policy python3.3-minimal python3.3-minimal: Installato: 3.3.2-7ubuntu3.1 Candidato: 3.3.2-7ubuntu3.1 Tabella versione: *** 3.3.2-7ubuntu3.1 0 500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main i386 Packages 500 http://archive.ubuntu.com/ubuntu/ saucy-security/main i386 Packages 100 /var/lib/dpkg/status 3.3.2-7ubuntu3 0 500 http://archive.ubuntu.com/ubuntu/ saucy/main i386 Packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1309988 Title: update-manager, trying to upgrade to 14.04 on verifying software channels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1309988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs