[Bug 1385665] Re: utopic upgrade lost the 'ubuntu' EFI variable

[Ubfan]

I have lost ubuntu...shim boot entries when installing/updating USB
flash sticks.  Updating 14.04 last week, on a USB3 8G stick caused a
nvram ram entry for the hard disk Ubuntu installation to be deleted.
This entry was for the shim bootloader, unused since secure boot was
disabled, but previously, the shim entry was deleted when secure boot
was enabled.  Nothing in the USB update should have touched anything in
nvram on the host machine.

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https://bugs.launchpad.net/bugs/1385665

Title:
  utopic upgrade lost the 'ubuntu' EFI variable

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

Bug description:
  My upgrade from trusty to utopic on my thinkpad X240 with a LUKS-
  encrypted / went smoothly enough.  The only oddity was a period when I
  had to click into the terminal details and hit enter for it to
  complete.  I'm not entirely sure what was waiting for input or if it
  is relevant, but when I rebooted I found myself without the 'ubuntu'
  entry in the EFI variables.

  I didn't realise this at first, and the Canonical Technical Support
  folks advised me to use this tool: https://help.ubuntu.com/community
  /Boot-Repair which made the problem worse (It did not fix the EFI
  problem, and removed dm-crypt.ko from my initrd).  I had to run
  efibootmgr to put it back, and start from an old kernel that had an
  unmolested initrd.

  I've restored boot functionality on my laptop now, but I'm curious
  what caused it to happen in the first place.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.9
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Oct 25 14:06:48 2014
  InstallationDate: Installed on 2014-05-29 (148 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2014-10-24 (0 days ago)
  VarLogDistupgradeTermlog:

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