[Bug 1289017] Re: symbol 'grub_isprint' not found booting degraded software raid1/LVM volume

[Phillip Susi]

This is a misconfiguration rather than a bug.  Your array was degraded
and so grub was only being installed to one of the disks, but your bios
was continuing to boot from the other disk, with the old, now broken
copy of grub.


** Changed in: grub2 (Ubuntu)
       Status: Confirmed => Invalid

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Title:
  symbol 'grub_isprint' not found booting degraded software raid1/LVM
  volume

Status in “grub2” package in Ubuntu:
  Invalid

Bug description:
  After upgrading to 14.04 (daily) and rebooting, grub stops with the
  message:

  symbol 'grub_isprint' not found after upgrade to 14.04 (daily)

  and enters rescue prompt. I was able to rescue the boot by running
  "grub-install" from a live USB stick with 12.04. Hard drives are using
  software raid1 and LVM. The RAID is was degraded, and running "update-
  grub" was printing a warning message:

  "Couldn't find physical volume `(null)'. Some modules may be missing
  from core image."

  (but it should be bootable). Fixing the degraded RAID and rerunning
  update-grub made it boot again.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 3.5.0-26.40-generic 3.5.7.6
  Uname: Linux 3.5.0-26-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu Mar  6 22:57:45 2014
  InstallationDate: Installed on 2010-07-04 (1340 days ago)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
  SourcePackage: grub2
  UpgradeStatus: Upgraded to trusty on 2014-03-06 (0 days ago)

  See also another user with the same problem:
  http://askubuntu.com/questions/420687/symbol-grub-isprint-not-found-
  error-on-boot-cannot-use-computer

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