Testing Kubuntu Final Bionic oem install; reboot is not successful

[Valorie Zimmerman]

I have filed 1766056 which possibly is a related bug, but after the respin I get a new message:

First it changes to a terminal screen and asks me to remove the installation medium and then hit return, which is new. When I follow those directions, I get the error on a black screen:

[ 1540.665054] usb usb3-port1: cannot disable (err = -32)

I will attach a photo from my phone if necessary.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Apr 26 13:33:55 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true ---
InstallationDate: Installed on 2018-04-26 (0 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1767195