Ubiquity installation hangs & fails due to nvidea-uvm probe error

[Dan]

Installation of Ubuntu 19.04 (disco-desktop-amd64.iso, daily build 2019-02-03 10:50) hangs and ultimately fails (i.e. the installation does not progress beyond this point), between the Disk Setup and the Timezone step. This happens regardless of whether having clicked to install straight away, or from a live desktop session.

From a live desktop session, the journal shows the following error (datetime obviously changes) which loops continuously for the duration of the installation 'hang' (this message can also be seen via dmesg):

Feb 15 22:18:19 kubuntu kernel: NVRM: No NVIDIA graphics adapter probed!
Feb 15 22:18:19 kubuntu kernel: nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
Feb 15 22:18:19 kubuntu systemd-udevd[17889]: Process '/sbin/modprobe nvidia-uvm' failed with exit code 1.
Feb 15 22:18:20 kubuntu kernel: nvidia-nvlink: Nvlink Core is being initialized, major device number 237
Feb 15 22:18:20 kubuntu kernel: NVRM: The NVIDIA probe routine was not called for 1 device(s).
Feb 15 22:18:20 kubuntu kernel: NVRM: This can occur when a driver such as:
                                NVRM: nouveau, rivafb, nvidiafb or rivatv
                                NVRM: was loaded and obtained ownership of the NVIDIA device(s).
Feb 15 22:18:20 kubuntu kernel: NVRM: Try unloading the conflicting kernel module (and/or
                                NVRM: reconfigure your kernel without the conflicting
                                NVRM: driver(s)), then try loading the NVIDIA kernel module
                                NVRM: again.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.4 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.19.0-12.13-generic 4.19.18
Uname: Linux 4.19.0-12-generic x86_64
ApportVersion: 2.20.10-0ubuntu20
Architecture: amd64
CasperVersion: 1.402
CurrentDesktop: KDE
Date: Fri Feb 15 22:30:41 2019
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Kubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190215)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.