[Bug 1085844] Re: update-manager uses subprocess.Popen incorrectly when calling dpkg

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/raring-proposed/ubuntu-release-upgrader

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https://bugs.launchpad.net/bugs/1085844

Title:
  update-manager uses subprocess.Popen incorrectly when calling dpkg

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Triaged

Bug description:
  While upgrading a machine from Precise to Quantal, I had the upgrade
  bomb out at the end with initramfs-tools postinst exiting 1. This was
  handled nicely, in my opinion, with update-manager explaining the
  issue and saying it will run 'dpkg --configure -a'. However, when it
  does this, it does not give the full path to subprocess.Popen(), so
  Python gives a few tracebacks with "dpkg: no such file or directory"

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