[Bug 1517099] [NEW] Misleading error message when package files are not found

[Tony Houghton]

Public bug reported:

Occasionally update-manager reports, "Some packages failed to download.
Check your Internet connection." I'm pretty sure these errors are not
usually caused by connectivity issues, and from using apt-get on the
command line I think the actual cause is file not found errors. This
happens when it's been too long between the check for updates and
actually downloading them, so some packages have been updated again in
the meantime, replacing the version that update-manager has in its
records of what's available.

update-manager should be able to detect that these are file not found
errors, and redo the equivalent of apt-get update and/or redo the update
before the upgrade if a certain amount of time has elapsed since the
update.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: update-manager 1:15.04.7
ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
Uname: Linux 3.19.0-26-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1.3
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Nov 17 15:16:24 2015
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1447772734'
InstallationDate: Installed on 2015-08-11 (98 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

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https://bugs.launchpad.net/bugs/1517099

Title:
  Misleading error message when package files are not found

Status in update-manager package in Ubuntu:
  New

Bug description:
  Occasionally update-manager reports, "Some packages failed to
  download. Check your Internet connection." I'm pretty sure these
  errors are not usually caused by connectivity issues, and from using
  apt-get on the command line I think the actual cause is file not found
  errors. This happens when it's been too long between the check for
  updates and actually downloading them, so some packages have been
  updated again in the meantime, replacing the version that update-
  manager has in its records of what's available.

  update-manager should be able to detect that these are file not found
  errors, and redo the equivalent of apt-get update and/or redo the
  update before the upgrade if a certain amount of time has elapsed
  since the update.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: update-manager 1:15.04.7
  ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
  Uname: Linux 3.19.0-26-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.17.2-0ubuntu1.3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Nov 17 15:16:24 2015
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'launch-time' b'1447772734'
  InstallationDate: Installed on 2015-08-11 (98 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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