Comment 1 for bug 1874287

Currently prepare stage of ubiquity executes ubuntu-drivers install.

When doing so, it installs packages in the live system.

During that time debconf database is locked and inaccesisble, and nvidia packages fail to install correctly. And possibly other dkms pacakges.

There are facilities to create overlay debconf database and use passthrough protocol to ensure that installing packages and talking to debconf works during that time.

Also one has to re-enable preconfigure of packages, such that config scripts are run, cause ubiquity disables those at the momement.