[Bug 768614] Re: No terminal, and no DISPLAY set, can't fork shell.

[Steve Langasek]

ok, so based on this information about it being a ucf bug (confirmed,
the error message in the ucf bug report is the same as the one here),
this is fixed in Ubuntu 13.10 and later - though not, unfortunately, in
12.04.

If we continue to see reports of this problem on upgrades from 12.04 to
14.04, we can consider an SRU of ucf to 12.04 to mitigate.

** Changed in: ucf (Ubuntu)
       Status: New => Fix Released

** Also affects: ucf (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=574266
   Importance: Unknown
       Status: Unknown

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Title:
  No terminal, and no DISPLAY set, can't fork shell.

Status in “ucf” package in Ubuntu:
  Fix Released
Status in “ucf” package in Debian:
  Unknown

Bug description:
  Binary package hint: update-manager

  I'm testing do-release-upgrade on ec2 from maverick -> natty
  I'm doing so by:
   - ssh in
   - byobu
   - sudo apt-get update && sudo apt-get dist-upgrade
   - sudo do-release-upgrade -d

  At a point during the upgrade it tells me that /etc/default/grub has been
  locally modified.  One of the options in this dialog is to:
    "start a new shell to examine the situation"

  When I select that option, I see:
    No terminal, and no DISPLAY set, can't fork shell.

  I'm not certain that this is update-manager related, but I dont'
  recall having seen it before.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager-core 1:0.150
  ProcVersionSignature: User Name 2.6.35-24.42-virtual 2.6.35.8
  Uname: Linux 2.6.35-24-virtual i686
  Architecture: i386
  Date: Thu Apr 21 21:23:56 2011
  Ec2AMI: ami-a6f504cf
  Ec2AMIManifest: ubuntu-images-us/ubuntu-maverick-10.10-i386-server-20101225.manifest.xml
  Ec2AvailabilityZone: us-east-1c
  Ec2InstanceType: m1.small
  Ec2Kernel: aki-407d9529
  Ec2Ramdisk: unavailable
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-04-21 (0 days ago)

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