20.04 Install screen corrupt on Lenovo P73+NVIDEA RTX-5000

[D]

Hardware: Lenovo P73 with NVIDEA RTX-5000 QMax

20.04 Daily Build install.

On using the USB drive for a new install the screen is corrupt. This can be worked around by:
1. Waiting for Focal Fossa to give the sound showing the splash screen.
2. Closing the screen so it goes into sleep mode.
3. Open the screen and hit the power button to wake the system.
4. Wait a second or two and screen loads correctly and the rest of the install works beautifully.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: init 1.57
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 22 08:27:04 2020
InstallationDate: Installed on 2020-03-21 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200315)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: init-system-helpers
UpgradeStatus: No upgrade log present (probably fresh install)

[Paride Legovini (paride)]

Hello and thanks for filing this bug report. This report has been filed against the init-system-helpers package, but according to the bug description it does not seem to be the correct package.

As the problem is related to the Desktop installer I'm reassigning the report to the casper package.

[D (djve)]

Paraide,

Thanks. If I can help let me know, I'm following this bug.

[Jean-Baptiste Lallement (jibel)]

The installation media uses the open source driver "nouveau" for nVidia cards, and recent GPUs are not always well supported. It is recommended to boot in "safe graphics" mode, then select "Install 3rd party drivers" during installation to install latest nVidia proprietary drivers for your card.

To boot in "safe graphics" mode, if you're booting with UEFI, select an entry with "(safe graphics)" from the boot menu. If you're booting in legacy mode, press any key when the purple screen with the small keyboard appears to display the boot menu, the n select an entry with "safe grpahics".

I hope this helps.