[Bug 848915] Re: cryptic traceback when running update-manager w/no X $DISPLAY

[Steve Langasek]

The issue here is not that the error message is unclear; the issue is
that update-manager is being run with $DISPLAY unset, when this
shouldn't ever happen on the desktop.  So something is wrong in the
privilege handling stack when we try to do a partial upgrade.

** Summary changed:

- cryptic traceback when running update-manager w/no X $DISPLAY
+ Partial upgrade results in cryptic traceback because $DISPLAY is not set

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https://bugs.launchpad.net/bugs/848915

Title:
  Partial upgrade results in cryptic traceback because $DISPLAY is not
  set

Status in Release Notes for Ubuntu:
  Fix Released
Status in “update-manager” package in Ubuntu:
  Triaged
Status in “update-manager” source package in Oneiric:
  Triaged
Status in “update-manager” source package in Precise:
  Triaged

Bug description:
  win7 wubi 11.04 w/update to o.o. 11.10 Beta 1 crash at start-up

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: update-manager 1:0.152.17
  ProcVersionSignature: Ubuntu 2.6.38-11.49-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic x86_64
  ApportVersion: 1.22.1-0ubuntu2
  Architecture: amd64
  Date: Mon Sep 12 23:26:51 2011
  ExecutablePath: /usr/bin/update-manager
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/update-manager -d
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/bin/update-manager', '-d']
  SourcePackage: update-manager
  Title: update-manager crashed with RuntimeError in /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py: Gtk couldn't be initialized
  UpgradeStatus: Upgraded to oneiric on 2011-09-12 (1 days ago)
  UserGroups:

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