Public bug reported:

Unfortunately the screen stays black before password prompt shows up. 
This happens since I've migrated from 22.04 to 24.04. 
Even a fresh install shows the same symptoms.

What helps is to detach the HDMI cable, attach it again and the TV shows
the password prompt for luks.

I did not try yet the removal of "splash" in the parameters. As this was
indicated by others who faced the same issue.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gdm3 46.0-2ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-45.45-generic 6.8.12
Uname: Linux 6.8.0-45-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct  1 08:12:07 2024
InstallationDate: Installed on 2024-09-29 (2 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 
(20240827.1)
ProcEnviron:
 LANG=de_DE.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gdm3 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble wayland-session

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https://bugs.launchpad.net/bugs/2083299

Title:
  Ubuntu 24.04: Occasionally screen stays black while booting

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