[Bug 2110381] [NEW] black screen when decrypting system partition

[Alexis]

Public bug reported:

1. Description:	Ubuntu 25.04
 Release:	25.04

2.cryptsetup:
   Installed: 2:2.7.5-1ubuntu2
   Candidate: 2:2.7.5-1ubuntu2
  Version table :
  *** 2:2.7.5-1ubuntu2 500
        500 http://be.archive.ubuntu.com/ubuntu plucky/main amd64 Packages
        100 /var/lib/dpkg/status

3.Hello,
when I boot Ubuntu with my laptop (dual Boot Ubuntu, Windows 11) (my internal screen is physically disconnected (it's broken) and I have an external screen connected via HDMI) when I get to the system partition decryption the screen is black, I can still enter my password and access the user selection menu.

4.instead of having the black screen have the decryption screen.

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: cryptsetup 2:2.7.5-1ubuntu2
ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
Uname: Linux 6.14.0-15-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.32.0-0ubuntu5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sun May 11 09:31:36 2025
ProcEnviron:
 LANG=fr_FR.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: cryptsetup
UpgradeStatus: No upgrade log present (probably fresh install)
cmdline: BOOT_IMAGE=/vmlinuz-6.14.0-15-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
crypttab: dm_crypt-0 UUID=7394e73f-5dfa-4e46-90c8-995725bb2496 none luks

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


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

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https://bugs.launchpad.net/bugs/2110381

Title:
  black screen when decrypting system partition

Status in cryptsetup package in Ubuntu:
  New

Bug description:
  1. Description:	Ubuntu 25.04
   Release:	25.04

  2.cryptsetup:
     Installed: 2:2.7.5-1ubuntu2
     Candidate: 2:2.7.5-1ubuntu2
    Version table :
    *** 2:2.7.5-1ubuntu2 500
          500 http://be.archive.ubuntu.com/ubuntu plucky/main amd64 Packages
          100 /var/lib/dpkg/status

  3.Hello,
  when I boot Ubuntu with my laptop (dual Boot Ubuntu, Windows 11) (my internal screen is physically disconnected (it's broken) and I have an external screen connected via HDMI) when I get to the system partition decryption the screen is black, I can still enter my password and access the user selection menu.

  4.instead of having the black screen have the decryption screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: cryptsetup 2:2.7.5-1ubuntu2
  ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
  Uname: Linux 6.14.0-15-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.32.0-0ubuntu5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Sun May 11 09:31:36 2025
  ProcEnviron:
   LANG=fr_FR.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: cryptsetup
  UpgradeStatus: No upgrade log present (probably fresh install)
  cmdline: BOOT_IMAGE=/vmlinuz-6.14.0-15-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
  crypttab: dm_crypt-0 UUID=7394e73f-5dfa-4e46-90c8-995725bb2496 none luks

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