[Bug 1385732] Re: package grub-efi-amd64 1.38+2.02~beta2-15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

[hackel]

This issue was caused by an unterminated string in my
/etc/default/grub.conf.  It took me far too long to discover this,
unfortunately.  grub-efi-amd64.postinst should really have better error
reporting.  Also, apparently I have been running this way for some time,
yet update-grub has never complained about it.  This should be detected
and resolved right away, and one missing character certainly shouldn't
bring down an entire distribution upgrade!

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Title:
  package grub-efi-amd64 1.38+2.02~beta2-15 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 128

Status in “grub2” package in Ubuntu:
  New

Bug description:
  I received this error message during the upgrade from 14.04 to 14.10,
  upgrading the package from 2.02~beta2-9ubuntu1 to 2.02~beta2-15.  The
  postinst script is quite long and complicated, so I don't have time to
  debug it myself.  It seems to me taht this is a rather serious,
  critical error.  I started  with a freshly installed copy of 14.04 on
  an EFI system.  After the upgrade, I'm now afraid to shut off or
  reboot myself until I get this critical issue resolved.

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