[Bug 1469995] [NEW] grub-efi-amd64-signed Forced Uninstall Causes Boot Failure

[Vindicator]

Public bug reported:

Yesterday, I tried to run an apt-get install when it said it could continue because of some "partial" something or other and I noticed it wanted to remove "grub-efi-amd64-signed".
I went ahead and let it update on it's own as it desired.

Then a little while ago I had to reboot for an unrelated reason, but I
find myself no longer able to boot. Not just not able to boot, but there
is no GRUB or EFI shell.

Boot-Repair from Live CD wouldn't complete due to "purge cancelled" for "grub-efi-amd64-signed".
While in Live-CD, I'd chroot to my system and run "grub-install" and "update-grub", and while they both succeeded, nothing had changed on boot.

I ended up disabling Secure Boot for now, but wanted to let you know
something went horribly wrong.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: grub-efi-amd64-signed (not installed)
Uname: Linux 4.0.0-040000-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jun 30 02:58:32 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-06-18 (11 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: grub2-signed
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub2-signed (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

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https://bugs.launchpad.net/bugs/1469995

Title:
  grub-efi-amd64-signed Forced Uninstall Causes Boot Failure

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  Yesterday, I tried to run an apt-get install when it said it could continue because of some "partial" something or other and I noticed it wanted to remove "grub-efi-amd64-signed".
  I went ahead and let it update on it's own as it desired.

  Then a little while ago I had to reboot for an unrelated reason, but I
  find myself no longer able to boot. Not just not able to boot, but
  there is no GRUB or EFI shell.

  Boot-Repair from Live CD wouldn't complete due to "purge cancelled" for "grub-efi-amd64-signed".
  While in Live-CD, I'd chroot to my system and run "grub-install" and "update-grub", and while they both succeeded, nothing had changed on boot.

  I ended up disabling Secure Boot for now, but wanted to let you know
  something went horribly wrong.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: grub-efi-amd64-signed (not installed)
  Uname: Linux 4.0.0-040000-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Jun 30 02:58:32 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-06-18 (11 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: grub2-signed
  UpgradeStatus: No upgrade log present (probably fresh install)

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