[Bug 1692215] Re: package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Jerry Bezencon]

*** This bug is a duplicate of bug 1692175 ***
    https://bugs.launchpad.net/bugs/1692175

Thanks Geoff. I can confirm that for Linux Lite (Ubuntu 16.04.2 base)
the following fix worked:

sudo nano /var/lib/dpkg/info grub-pc.postinst

change line 699 from:

        if dpkg --compare-versions "$2" lt-nl 2.02~beta2-36ubuntu3.10 then
to
        if dpkg --compare-versions "$2" lt-nl 2.02~beta2-36ubuntu3.10; then

Then run:

sudo dpkg --configure grub-pc

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https://bugs.launchpad.net/bugs/1692215

Title:
  package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 2

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  On Ubuntu 16.04LTS. Automatic package updater indicated grub2 needed
  updating. When it finished it said there was a problem and asked if I
  wanted to report it. After clicking 'Report it' no further action was
  taken at that time.  I have just rebooted, and the 'there was a
  problem' dialog box reappear, this time clicking 'Report it' elicited
  a password prompt and eventual display of this page.

  My system appears, on the surface, to be working correctly at the
  moment, but I have not done much since the reboot.

  Bug report #1692175 sounds similar but is for the efi version of grub.

  Additional details:
  $ lsb_release -rd
  Description:	Ubuntu 16.04.2 LTS
  Release:	16.04
  $ apt-cache policy grub2
  grub2:
    Installed: (none)
    Candidate: 2.02~beta2-36ubuntu3.10
    Version table:
       2.02~beta2-36ubuntu3.10 500
          500 http://gb.archive.ubuntu.com/ubuntu xenial-proposed/universe amd64 Packages
       2.02~beta2-36ubuntu3.9 500
          500 http://gb.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
       2.02~beta2-36ubuntu3 500
          500 http://gb.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-pc 2.02~beta2-36ubuntu3.10
  ProcVersionSignature: Ubuntu 4.4.0-79.100-generic 4.4.67
  Uname: Linux 4.4.0-79-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.6
  Architecture: amd64
  Date: Sat May 20 12:10:23 2017
  DuplicateSignature:
   package:grub-pc:2.02~beta2-36ubuntu3.10
   Setting up grub-pc (2.02~beta2-36ubuntu3.10) ...
   /var/lib/dpkg/info/grub-pc.postinst: line 703: syntax error near unexpected token `fi'
   dpkg: error processing package grub-pc (--configure):
    subprocess installed post-installation script returned error exit status 2
  ErrorMessage: subprocess installed post-installation script returned error exit status 2
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-79-generic root=UUID=8d5fb140-93f5-40ce-9e58-1d9abb865022 ro net.ifnames=0 biosdevname=0
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.21
  SourcePackage: grub2
  Title: package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
  UpgradeStatus: Upgraded to xenial on 2016-08-03 (290 days ago)

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