[Bug 1582063] [NEW] "hold prevents markGarbage..." - possible fault for not being able to upgrade to Ubuntu 16.04

[Hugo]

Public bug reported:

I followed the instructions at OMBUbuntu! 
http://www.omgubuntu.co.uk/2016/04/how-to-upgrade-ubuntu-15-10-to-16-04-lts

However, the installation procedure for Ubuntu 16.04 failed after that
which led me to removing all of my 3rd party sources. In doing so, I
looked up the "markGarbage" error and removed any sources related to
xserver. Unknowingly, it turned out to be something important so I went
into Recovery mode later on and had to install xserver through there
which thankfully I was able to get into my Desktop again. Now, I'm here
with the same error not knowing what it is, and even questioning myself
if that's even the root cause of it? Thanks for the help Ubuntu!

-Hugo

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-36.41-generic 4.2.8-ckt8
Uname: Linux 4.2.0-36-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Sun May 15 20:03:20 2016
InstallationDate: Installed on 2015-07-27 (294 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-05-16 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade third-party-packages wily

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https://bugs.launchpad.net/bugs/1582063

Title:
  "hold prevents markGarbage..." - possible fault for not being able to
  upgrade to Ubuntu 16.04

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I followed the instructions at OMBUbuntu! 
  http://www.omgubuntu.co.uk/2016/04/how-to-upgrade-ubuntu-15-10-to-16-04-lts

  However, the installation procedure for Ubuntu 16.04 failed after that
  which led me to removing all of my 3rd party sources. In doing so, I
  looked up the "markGarbage" error and removed any sources related to
  xserver. Unknowingly, it turned out to be something important so I
  went into Recovery mode later on and had to install xserver through
  there which thankfully I was able to get into my Desktop again. Now,
  I'm here with the same error not knowing what it is, and even
  questioning myself if that's even the root cause of it? Thanks for the
  help Ubuntu!

  -Hugo

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.4
  ProcVersionSignature: Ubuntu 4.2.0-36.41-generic 4.2.8-ckt8
  Uname: Linux 4.2.0-36-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: GNOME
  Date: Sun May 15 20:03:20 2016
  InstallationDate: Installed on 2015-07-27 (294 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to wily on 2016-05-16 (0 days ago)
  VarLogDistupgradeTermlog:

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