Comment 2 for bug 1855681

Revision history for this message
Allan W. Macdonald (allan-w-macdonald) wrote :

I believe that this may have happened to me with ppa:oibaf/graphics-drivers

$ sudo ppa-purge ppa:oibaf/graphics-drivers
Updating packages lists
PPA to be removed: oibaf graphics-drivers
Warning: Could not find package list for PPA: oibaf graphics-drivers
$

In this case, the ppa exists for newer releases of ubuntu but the support for bionic has been removed. In any case, I am stuck with packages that were installed via the ppa but I have no way to revert them to official package types. This seems to prevent do-release-upgrade from completing.

See also:
https://answers.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+question/696223
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1920829
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1069133