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[m1st0 <2115336@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description:    Ubuntu 25.04
Release:        25.04

dracut-core:
  Installed: 106-2ubuntu5
  Candidate: 106-2ubuntu5
  Version table:
 *** 106-2ubuntu5 500
        500 http://us.archive.ubuntu.com/ubuntu plucky/universe amd64 Packages
        100 /var/lib/dpkg/status

Lets say you place a file in
 
/etc/apt/apt.conf.d/99nvidia

Calling a script you want to use to ensure nvidia drivers are ready for
any new kernal install.  The apt config hook notes:

Pkg::Post-Invoke { "/home/$USER/workspace/nvidia_module_install.zsh"; };

and although the zsh script fails, Grub will no longer be listed as a
bootable entry even as dracut-core finishes with no errors.

Understandably whatever this ZSH script does may lead you to question
whether it is the culprit, however the focus should be on the loss of
being able to boot if the script is simply just a failing workable tool.
If you want to see the script, it is at

https://gist.github.com/m1st0/3957db900736b5a01d16b8ef1b0ddd69

It simply installs nvidia drivers and blacklists them so that sddm can
boot until they can be dynamically loaded when needed on certain
laptops.  There may be work to do on the ZSH script, but it shows off
how I think dracut-core can fail miserably leaving a system that cannot
boot.

I removed the hook in /etc/apt/apt.conf.d/99nvidia, and ran the following just to be sure:
sudo update-initramfs -v -u  
sudo grub-mkconfig -o /boot/grub/grub.cfg
sudo grub-mkconfig -o /boot/efi/EFI/ubuntu/grub.cfg
sudo update-grub2

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


** Tags: dracut grub

** Package changed: botan (Ubuntu) => dracut (Ubuntu)

-- 
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https://bugs.launchpad.net/bugs/2115336

Title:
  Grub Won't Boot After Dracut Failure

Status in dracut package in Ubuntu:
  New

Bug description:
  Description:    Ubuntu 25.04
  Release:        25.04

  dracut-core:
    Installed: 106-2ubuntu5
    Candidate: 106-2ubuntu5
    Version table:
   *** 106-2ubuntu5 500
          500 http://us.archive.ubuntu.com/ubuntu plucky/universe amd64 Packages
          100 /var/lib/dpkg/status

  Lets say you place a file in
   
  /etc/apt/apt.conf.d/99nvidia

  Calling a script you want to use to ensure nvidia drivers are ready
  for any new kernal install.  The apt config hook notes:

  Pkg::Post-Invoke { "/home/$USER/workspace/nvidia_module_install.zsh";
  };

  and although the zsh script fails, Grub will no longer be listed as a
  bootable entry even as dracut-core finishes with no errors.

  Understandably whatever this ZSH script does may lead you to question
  whether it is the culprit, however the focus should be on the loss of
  being able to boot if the script is simply just a failing workable
  tool.  If you want to see the script, it is at

  https://gist.github.com/m1st0/3957db900736b5a01d16b8ef1b0ddd69

  It simply installs nvidia drivers and blacklists them so that sddm can
  boot until they can be dynamically loaded when needed on certain
  laptops.  There may be work to do on the ZSH script, but it shows off
  how I think dracut-core can fail miserably leaving a system that
  cannot boot.

  I removed the hook in /etc/apt/apt.conf.d/99nvidia, and ran the following just to be sure:
  sudo update-initramfs -v -u  
  sudo grub-mkconfig -o /boot/grub/grub.cfg
  sudo grub-mkconfig -o /boot/efi/EFI/ubuntu/grub.cfg
  sudo update-grub2

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