Public bug reported:
"cryptsetup luksOpen" is not invoked in initrd to decrypt root
filesystem. Instead, initrd complains that it can not find the
filesystem with the UUID of the rootfs and I am thrown into the
initramfs prompt.
On the initramfs-prompt, I can manually invoke "cryptsetup luksOpen
/dev/nvme0n1p5 cr-root-1" and the missing UUID appears in /dev/disk/by-
uuid. After that, I can exit initramfs by typing CTRL-D and boot
procedure continues and succeeds.
This worked fine in ubuntu-24.04.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: initramfs-tools 0.151ubuntu1
ProcVersionSignature: Ubuntu 7.0.0-29.29-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckMismatches: ./boot/grub/grub.cfg ./casper/initrd
./casper/ubuntu-server-minimal.squashfs ./dists/resolute/Release.gpg
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Wed Aug 5 22:24:12 2026
InstallationDate: Installed on 2026-08-05 (0 days ago)
InstallationMedia: Ubuntu-Server 26.04 "Resolute Raccoon" - Release amd64
(20260420.1)
PackageArchitecture: all
ProcEnviron:
LANG=de_DE.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: initramfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2162931
Title:
LUKS crypted root can not be opened during initrd
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