[Bug 1378736] Re: Boot Hangs with "cryptsetup not found" after upgrade to kernel 3.13.0-36

[lostboy1]

I too ran in to a problem after upgrading a luks full disk encrypted
12.04.5 system to 14.04.1. After successfully upgrading, upon reboot I
was asked for the luks password for the root  system. After entering the
password, I see sever errors including "/sbin/cryptsetup not found".

After doing research I came across bug
https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1256730. After
booting from a rescue cd, creating the file in comment #4 and updating
the initrd, the cryptsetup could be found in the initrd.

Another reboot and all was good.

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https://bugs.launchpad.net/bugs/1378736

Title:
  Boot Hangs with "cryptsetup not found" after upgrade to kernel
  3.13.0-36

Status in cryptsetup package in Ubuntu:
  Incomplete

Bug description:
  After an fresh install of ubuntu 14.04.1 on an luks encrypted root - everything worked fine.
  after the first reeboot i made an "apt-get dist-upgrade" and after the ext reboot the system won accept my luks passphrase.

  After further investigation we found an similar bug in ubuntu from
  2013 - where in initrd was created with a missing "cryptsetup" - so i
  tried the old kernel and it worked...

  
  so it seems that in this kernel the "cryptsetup" is missing...

  what to do?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.5
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Oct  8 11:59:53 2014
  InstallationDate: Installed on 2014-10-08 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=de_DE
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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