I installed cosmic in a KVM vm using virt-manager, then ran update-manager to update a few packages leaving the lock file behind, restarted to the installer, chose reinstall and the installer is stuck in systemd[1]: Started Cleanup of Temporary Directories.
I installed cosmic in a KVM vm using virt-manager, then ran update-manager to update a few packages leaving the lock file behind, restarted to the installer, chose reinstall and the installer is stuck in systemd[1]: Started Cleanup of Temporary Directories.