[Bug 934371] Re: Unresolvable problem message does not help users and results in less useful bug reports

[Brian Murray]

The problem messages are now more informative:

            # the most likely problem is the 3rd party pkgs so don't address
            # foreignPkgs and devRelease being True
            details =  _("An unresolvable problem occurred while "
                         "calculating the upgrade.\n\n ")
            if self.config.get("Options", "foreignPkgs") == "True":
                details += _("This was likely caused by:\n"
                             " * Unofficial software packages not provided by Ubuntu\n"
                             "Please use the tool 'ppa-purge' from the ppa-purge \n"
                             "package to remove software from a Launchpad PPA and \n"
                             "try the upgrade again.\n"
                             "\n")
            elif self.config.get("Options", "foreignPkgs") == "False" and \
                self.config.get("Options", "devRelease") == "True":
                details +=  _("This was caused by:\n"
                              " * Upgrading to a pre-release version of Ubuntu\n"
                              "This is most likely a transient problem, \n"
                              "please try again later.\n")
            # we never have partialUpgrades (including removes) on a stable system
            # with only ubuntu sources so we do not recommend reporting a bug
            if partialUpgrade:
                details += _("This is most likely a transient problem, "
                             "please try again later.")
            else:
                details += _("If none of this applies, then please report this bug using "
                             "the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. ")
                details += _("If you want to investigate this yourself the log files in "
                             "'/var/log/dist-upgrade' will contain details about the upgrade. "
                             "Specifically, look at 'main.log' and 'apt.log'.")
            # make the error text available again on stdout for the
            # text frontend
            self._stopAptResolverLog()
            view.error(_("Could not calculate the upgrade"), details)

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https://bugs.launchpad.net/bugs/934371

Title:
  Unresolvable problem message does not help users and results in less
  useful bug reports

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in update-manager package in Ubuntu:
  Invalid

Bug description:
  In UpdateManager/UpdateManager.py the following code exists:

      except SystemError, e:
          msg = ("<big><b>%s</b></big>\n\n%s\n'%s'" %
                 (_("Could not calculate the upgrade"),
                  _("An unresolvable problem occurred while "
                    "calculating the upgrade.\n\n"
                    "Please report this bug against the 'update-manager' "
                    "package and include the following error message:"),
                  e)
                 )

  The upgrade may not be calculated for a couple of reasons.  As an
  example we have:

  E:Error, pkgProblemResolver::Resolve generated breaks, this may be
  caused by held packages.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  update-manager knows, or should know, if you are upgrading to a pre-
  release or running one and should notify the user to try again as this
  may be due to archive inconsistencies rather than having them file a
  bug right away.

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