Public bug reported:
Imported from Debian bug http://bugs.debian.org/1108204:
Package: initramfs-tools
Version: 0.148.2
Severity: normal
Dear Maintainer,
When installing a kernel package and a package with a trigger for
update-initramfs
in one go, the update of the initramfs is skipped in some cases.
In a clean chroot, populated with debootstrap for "trixie", I ran
apt install linux-image-amd64 plymouth-theme-mobian
Result:
[...]
Setting up linux-image-6.12.32-amd64 (6.12.32-1) ...
I: /vmlinuz.old is now a symlink to boot/vmlinuz-6.12.32-amd64
I: /initrd.img.old is now a symlink to boot/initrd.img-6.12.32-amd64
I: /vmlinuz is now a symlink to boot/vmlinuz-6.12.32-amd64
I: /initrd.img is now a symlink to boot/initrd.img-6.12.32-amd64
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-6.12.32-amd64
Setting up linux-image-amd64 (6.12.32-1) ...
Setting up plymouth-theme-mobian (1.1) ...
update-alternatives: using /usr/share/plymouth/themes/mobian/mobian.plymouth
to provide /usr/share/plymouth/themes/default.plymouth (default.plymouth) in
auto mode
Processing triggers for libc-bin (2.41-8) ...
Processing triggers for initramfs-tools (0.148.2) ...
update-initramfs: /boot/initrd.img-6.12.32-amd64 has already been updated
since Mon Jun 23 06:07:09 2025.
#
The initramfs is updated after setup of the kernel package. It is NOT updated
again
after setup of package plymouth-theme-mobian, which is wrong. The files that are
installed by package plymouth-theme-mobian are missing in the initramfs (and the
plymouth splash screen will not work).
This behaviour was introduced in version 0.147 by:
[7f2ed35] Avoid updating the initramfs twice for some cases (LP:
#1466965)
My use-case is that I install the kernel package and plymouth-theme-mobian
during an image build that runs in a debootstrap chroot.
I could work around the issue by manually calling "update-initramfs -u" at the
end of the image build, or by calling update-initramfs in the postinst script
of plymouth-theme-mobian (instead of defining a dpkg trigger). I consider both
ways as workarounds and the new behaviour of update-initrafms as a bug.
Note that I'm not a Mobian developer nor do I use that package. I have a custom
package that defines a trigger in the same way as plymouth-theme-mobian where I
observe the issue.
Tobias
** Affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2115489
Title:
initramfs-tools: update-initramfs trigger does not update the
initramfs in some cases
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