[Bug 1264004] Re: apt-listchanges shows in tty instead of GTK window when using Update Manager; silently stalls

[erik]

*** This bug is a duplicate of bug 995195 ***
    https://bugs.launchpad.net/bugs/995195

** This bug has been marked a duplicate of bug 995195
   apt-listchanges causes update-manager to appear to hang

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https://bugs.launchpad.net/bugs/1264004

Title:
  apt-listchanges shows in tty instead of GTK window when using Update
  Manager; silently stalls

Status in update-manager package in Ubuntu:
  Triaged

Bug description:
  For some reason update-manager doesn't export the right hints to apt-
  listchanges, so the process ends up starting "less" instead of a GTK
  window (which it was configured to do via debconf).

  Since the console for update-manager is hidden by default, the user
  doesn't even notice that the updater is waiting for user input (in
  this case, paging through, "q", then "y").

  Ideally u-m should coax apt-listchanges to show the dialog, or at the
  very least notice that the operation is stalled and alert the user.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: update-manager 1:0.196.3
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Uname: Linux 3.12.0-7-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.12.7-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Dec 24 17:14:54 2013
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'744'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'1301'
   b'com.ubuntu.update-manager' b'launch-time' b'1387922868'
  InstallationDate: Installed on 2013-03-18 (281 days ago)
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214)
  InterpreterPath: /usr/bin/python3.3
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to trusty on 2013-11-23 (30 days ago)
  --- 
  ApportVersion: 2.12.7-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2013-03-18 (281 days ago)
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214)
  MarkForUpload: True
  NonfreeKernelModules: openafs
  Package: apt-listchanges 2.85.11ubuntu1
  PackageArchitecture: all
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Tags:  trusty
  Uname: Linux 3.12.0-7-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2013-11-23 (30 days ago)
  UserGroups: adm cdrom dip fuse kvm libvirtd lpadmin plugdev sambashare sbuild sudo

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