[Bug 1843688] Re: Trying to upgrade OS to latest LTS after purging PPAs

[Brian Murray]

Could you explain how you went about purging the PPA? I'm still seeing a
lot of X packages installed from the oibaf PPA and these are preventing
the upgrade from happening.

xserver-xorg-video-amdgpu 18.1.99+git1811301935.b11ee0~oibaf~x 1
xserver-xorg-video-ati 1:18.1.99+git1811191935.b559fd~oibaf~x 1
xserver-xorg-video-fbdev 1:0.4.4-1build5 1
xserver-xorg-video-intel 2:2.99.917+git1811140735.746ab3~oibaf~x 1
xserver-xorg-video-nouveau 1:1.0.15+git1805201934.ac8f7b~oibaf~x 1
xserver-xorg-video-qxl 0.1.4-3ubuntu3 1
xserver-xorg-video-radeon 1:18.1.99+git1811191935.b559fd~oibaf~x 1


** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1843688

Title:
  Trying to upgrade OS to latest LTS after purging PPAs

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

Bug description:
  System Information:

  Unbuntu 16.04 LTS 64 Bit
  Using apt-cache policy pkgname gives me "N: Unable to locate package pkgname"

  
  Going through the software update option I was informed that the LTS for version 18 of Ubuntu was now available so I went ahead to install this. First time around I was told some of my PPA's could be causing a problem so i purged these and tried again. 

  Expected behavior would be that the upgrade works with minimal user interaction
  What actually happens is that I do not get past the second part of the upgrade and i get the message saying the upgrade could not be completed.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.26
  Uname: Linux 4.4.9-040409-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Sep 12 10:08:52 2019
  InstallationDate: Installed on 2016-06-25 (1173 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-09-12 (0 days ago)
  VarLogDistupgradeTermlog:

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