[Bug 1387654] Re: installing or upgrading to Ubuntu 14.10 kills Boot Manager on ThinkPad W540

[Chris Emerson]

That's right - I installed the older package from a 14.04 live
DVD/chroot, and used "sudo aptitude hold efibootmgr" to stop it being
updated to the broken version.

There may be simpler way of doing the live/chroot way, but I had to do a
bunch of bind mounts into the mounted fs (eg for /dev, /proc, /boot,
etc.) before chroot.  If you're having problems I can try to recreate
and write down all the steps (but it might take a few days for me to get
around to it).

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https://bugs.launchpad.net/bugs/1387654

Title:
  installing or upgrading to Ubuntu 14.10 kills Boot Manager on ThinkPad
  W540

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

Bug description:
  When you install or upgrade to Ubuntu 14.10 on a Lenovo ThinkPad W540
  after a reboot the machine prints:

  
  Boot Manager recover from critical error. Some essential variables are absent or corrupted and Boot Manager has restored them from default configuration. Press Esc to continue or F1 to enter Setup.

  Then restores to default configuration (eg only Windows boots)

  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
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Oct 30 13:10:43 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-10-27 (3 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: release-upgrade
  UpgradeStatus: Upgraded to utopic on 2014-10-28 (2 days ago)
  VarLogDistupgradeTermlog:

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