[Bug 936870] Re: unattended upgrade failing due to incorrectly detected conffile prompt

[Michael Vogt]

Thanks for your bugreport and sorry for my slow reply.

The interessting bit in the report is:

conffile line:  /etc/default/dhcpcd newconffile
current md5: 5985e1dff4832ed1fef727da4809202f
pkg_md5sum: 5985e1dff4832ed1fef727da4809202f

i.e. the "/etc/default/dhcpcd newconffile" line - the code needs to
specialcase the "newconffile" and ignore that.

** Summary changed:

- unattended upgrade failing due to incorrectly detected conffile prompt
+ unattended upgrade failing due to incorrectly detected conffile prompt due to "newconffile" line

** Changed in: unattended-upgrades (Ubuntu)
       Status: New => Triaged

** Changed in: unattended-upgrades (Ubuntu)
   Importance: Undecided => Medium

** Changed in: unattended-upgrades (Ubuntu)
    Milestone: None => precise-updates

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https://bugs.launchpad.net/bugs/936870

Title:
  unattended upgrade failing due to incorrectly detected conffile prompt
  due to "newconffile" line

Status in “unattended-upgrades” package in Ubuntu:
  Triaged

Bug description:
  On severa hundredl of our Ubuntu machines, we have unattended upgrades
  active.  Over the weekend, this started reporting on all machines with
  dhcpcd installed that it could not upgrade that package due to a
  conffile prompt.  This looks very similar to #773007  and #336558,
  both of which are marked as fixed.

  On one of the machines, I've run unattended-upgrades --debug, and
  attached the output below.  The MD5 sums seem to match (which is a
  relief - I didn't think I was modifying these files), so I don't know
  why the conffile prompt is being detected.  If I run apt-get safe-
  upgrade on its own, it successfully upgrades the package with no
  prompting.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: unattended-upgrades 0.55ubuntu7
  ProcVersionSignature: Ubuntu 2.6.32-37.81-server 2.6.32.49+drm33.21
  Uname: Linux 2.6.32-37-server x86_64
  Architecture: amd64
  Date: Mon Feb 20 10:06:00 2012
  InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
  PackageArchitecture: all
  ProcEnviron:
   SHELL=/usr/local/bin/bash
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
  SourcePackage: unattended-upgrades

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