[Bug 1887426] Re: "Error on do-release-upgrade -d 18.04 to 20.04 (mixed destop & server)"

[Brian Murray]

According to VarLogDistupgradeMainlog.txt you don't have a desktop meta
package installed. Please try installing ubuntu-desktop and upgrading
again.

2020-07-13 21:07:16,923 DEBUG need_server_mode(): can not find a desktop
meta package or key deps, running in server mode

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

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https://bugs.launchpad.net/bugs/1887426

Title:
  "Error on do-release-upgrade -d 18.04 to 20.04 (mixed destop &
  server)"

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

Bug description:
  **** cat /etc/lsb-release
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=18.04
  DISTRIB_CODENAME=bionic
  DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"
  **** screenfetch
                            ./+o+-       ****@BazUbu
                    yyyyy- -yyyyyy+      OS: Ubuntu 18.04 bionic
                 ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-111-generic
             .++ .:/++++++/-.+sss/`      Uptime: 1h 54m
           .:++o:  /++++++++/:--:/-      Packages: 4601
          o:+o+:++.`..```.-/oo+++++/     Shell: bash 4.4.20
         .:+o:+o/.          `+sssoo+/    Resolution: 3360x1080
    .++/+:+oo+o:`             /sssooo.   DE: GNOME 
   /+++//+:`oo+o               /::--:.   WM: GNOME Shell
   \+/+o+++`o++o               ++////.   WM Theme: Radiance
    .++.o+++oo+:`             /dddhhh.   GTK Theme: Ambiance [GTK2/3]
         .+.o+oo:.          `oddhhhh+    Icon Theme: ubuntu-mono-light
          \+.++o+o``-````.:ohdhhhhh+     Font: Ubuntu 11
           `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-2600 @ 8x 3.8GHz
             .o:`.syhhhhhhh/.oo++o`      GPU: Mesa DRI Intel(R) HD Graphics 2000 (SNB GT1)
                 /osyyyyyyo++ooo+++/     RAM: 3762MiB / 15976MiB
                     ````` +oo+++o\:    
                            `oo++.      
  I have certainly problem of dependencies, packages installed out of ubuntu... But what to do???
  File apt.log shows many things but I don't see the problem. This computer runs first on 12.04 and I migrate up to 18.04 without too much problems (desktop, apache, virtualbox...). How to know which packages are not supported?

  Best regards

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 4.15.0-111.112-generic 4.15.18
  Uname: Linux 4.15.0-111-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.15
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Jul 13 21:08:14 2020
  InstallationDate: Installed on 2012-07-21 (2914 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-07-13 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz: Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: Error checking for authorization org.freedesktop.policykit.exec: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying

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