[Bug 772253] Re: update-manager upgrade volume detector needs to perform more checks

[qji]

It seems a bit dangerous... I get the same popup on 12.04 when I pluged
in a 10.04 USB installer. I don't know what heppens if somebody press
the Yes button...

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https://bugs.launchpad.net/bugs/772253

Title:
  update-manager upgrade volume detector needs to perform more checks

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: update-manager

  Currently, if you were to write an ubuntu image to a USB disk using
  USB creator, when the process completes, a window entitled, "Upgrade
  Volume Detected" pops up saying:

  A distribution volume with software packages has been detected.

  Would you like to try to upgrade from it automatically?

  This is potentially helpful, but also potentially dangerous since if
  the user were running natty and for example writing a maverick image,
  the same box pops up asking if you want to "upgrade"... to maverick.

  Maybe a check could be performed to see if the upgrade volume is newer
  in some way than the installed system?

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
  Uname: Linux 2.6.38-8-generic-pae i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Thu Apr 28 11:00:35 2011
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-04-23 (4 days ago)

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