I've tried disabling the third party packages (via tickboxes in update manager) and running ppa-purge (though I'm unclear what precisely its supposed to do):
grep ppa /etc/apt/sources.list.d/* /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list:deb http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list:# deb-src http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list.distUpgrade:deb http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list.distUpgrade:# deb-src http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list.save:deb http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/morphis-ubuntu-anbox-support-xenial.list.save:# deb-src http://ppa.launchpad.net/morphis/anbox-support/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list:deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list:# deb-src http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list.distUpgrade:deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list.distUpgrade:# deb-src http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list.save:deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-xenial.list.save:# deb-src http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main sudo ppa-purge ppa:ubuntu-toolchain-r-ubuntu-test-xenial Updating packages lists PPA to be removed: ppa:ubuntu-toolchain-r-ubuntu-test-xenial ppa:ubuntu-toolchain-r-ubuntu-test-xenial Warning: Could not find package list for PPA: ppa:ubuntu-toolchain-r-ubuntu-test-xenial ppa:ubuntu-toolchain-r-ubuntu-test-xenial sudo ppa-purge ppa:morphis-ubuntu-anbox-support-xenial Updating packages lists PPA to be removed: ppa:morphis-ubuntu-anbox-support-xenial ppa:morphis-ubuntu-anbox-support-xenial Warning: Could not find package list for PPA: ppa:morphis-ubuntu-anbox-support-xenial ppa:morphis-ubuntu-anbox-support-xenial This makes no difference. Where do I find the actual error? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811203 Title: upgrade from Ubuntu 16.04 to 18.04 failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1811203/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
