This is still not working even after removing all ppa except the official Ubuntu ones and two that I cannot remove for unknown reasons.
decebal@decebal-PORTEGE-Z30-B:~$ grep -Rn --include=\*.list ^[^\#] /etc/apt/ /etc/apt/sources.list:5:deb http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted /etc/apt/sources.list:10:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted /etc/apt/sources.list:16:deb http://fr.archive.ubuntu.com/ubuntu/ bionic universe /etc/apt/sources.list:18:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe /etc/apt/sources.list:26:deb http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse /etc/apt/sources.list:28:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse /etc/apt/sources.list:36:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse /etc/apt/sources.list:43:deb http://archive.canonical.com/ubuntu bionic partner /etc/apt/sources.list:46:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted /etc/apt/sources.list:48:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe /etc/apt/sources.list:50:deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse /etc/apt/sources.list.d/playonlinux.list:1:deb http://deb.playonlinux.com/ bionic main /etc/apt/sources.list.d/skype-stable.list:1:deb [arch=amd64] https://repo.skype.com/deb stable main -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883352 Title: impossible to migrate from 18.04 to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1883352/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
