[Bug 2147674] Re: Update caused boot process hang

[Michael D St Laurent]

Still happening after installing today's updates. Video attached of the
hang taking place. At one point you can see all the boot up messages fly
past down the screen all at once instead of one at a time as they
usually do.

** Attachment added: "20260410_195250.mp4"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2147674/+attachment/5960322/+files/20260410_195250.mp4

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https://bugs.launchpad.net/bugs/2147674

Title:
  Update caused boot process hang

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  After this last update I rebooted and the system hanged during boot
  without getting to the gnome login screen. I was at a black screen
  with the cursor flashing in the top left corner. I am able to get past
  this only by booting to recovery mode and dropping to root, then
  resuming the boot process. I must drop to root before resuming the
  boot or it will hang. It does not matter if I boot with kernel
  7.0.0-10 or 7.0.0-12 the behavior is the same.

  This latest version of 7.0.0-12 does seem to have fixed the problem
  with only seeing one of my three monitors, however (which is a bug I
  reported separately).

  ProblemType: Bug
  DistroRelease: Ubuntu 26.04
  Package: ubuntu-release-upgrader-core 1:26.04.14
  ProcVersionSignature: Ubuntu 7.0.0-12.12-generic 7.0.0-rc6
  Uname: Linux 7.0.0-12-generic x86_64
  NonfreeKernelModules: zfs nvidia_modeset nvidia
  ApportVersion: 2.33.1-0ubuntu7
  Architecture: amd64
  CasperMD5CheckMismatches: ./boot/grub/i386-pc/eltorito.img
  CasperMD5CheckResult: fail
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr  9 16:25:44 2026
  InstallationDate: Installed on 2026-03-28 (13 days ago)
  InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Daily amd64 (20260325)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   XDG_RUNTIME_DIR=<set>
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)
  VarLogDistupgradeAptlog:
   Log time: 2026-04-09 16:00:52.191731
   Starting pkgProblemResolver with broken count: 0
   Starting 2 pkgProblemResolver with broken count: 0
   Done
   Entering ResolveByKeep

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