[Bug 1913643] Re: cannot upgrade ubuntu 20.04

Brian Murray 1913643 at bugs.launchpad.net
Mon Apr 5 21:59:31 UTC 2021 

Thanks for taking the time to report this upgrade failure. There is
currently a new version of the release upgrader availalbe in -proposed
which may resolve the error you've encountered. Please run the following
command to test the new version of the upgrader:

  do-release-upgrade -p

Please lets us know the results in this bug report. Thanks again and
good luck!

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

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https://bugs.launchpad.net/bugs/1913643

Title:
  cannot upgrade ubuntu 20.04

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

Bug description:
  here are the last bits of main.log

  2021-01-28 16:19:57,078 DEBUG Obsolete: cuda-command-line-tools-10-2 cuda-compiler-10-2 cuda-cudart-10-2 cuda-cudart-dev-10-2 cuda-cufft-10-2 cuda-cufft-dev-10-2 cuda-cuobjdump-10-2 cuda-cupti-10-2 cuda-cupti-dev-10-2 cuda-curand-10-2 cuda-curand-dev-10-2 cuda-cusolver-10-2 cuda-cusolver-dev-10-2 cuda-cusparse-10-2 cuda-cusparse-dev-10-2 cuda-documentation-10-2 cuda-driver-dev-10-2 cuda-gdb-10-2 cuda-libraries-10-2 cuda-libraries-dev-10-2 cuda-license-10-2 cuda-memcheck-10-2 cuda-misc-headers-10-2 cuda-npp-10-2 cuda-npp-dev-10-2 cuda-nsight-10-2 cuda-nsight-compute-10-2 cuda-nsight-systems-10-2 cuda-nvcc-10-2 cuda-nvdisasm-10-2 cuda-nvgraph-10-2 cuda-nvgraph-dev-10-2 cuda-nvjpeg-10-2 cuda-nvjpeg-dev-10-2 cuda-nvml-dev-10-2 cuda-nvprof-10-2 cuda-nvprune-10-2 cuda-nvrtc-10-2 cuda-nvrtc-dev-10-2 cuda-nvtx-10-2 cuda-nvvp-10-2 cuda-repo-ubuntu1804-10-2-local-10.2.89-440.33.01 cuda-samples-10-2 cuda-sanitizer-api-10-2 cuda-toolkit-10-2 cuda-tools-10-2 cuda-visual-tools-10-2 libcublas-dev libcublas10 lur-command nsight-compute-2019.5.0 nsight-systems-2019.5.2 piper sublime-text zoneminder zoneminder-doc
  2021-01-28 16:19:57,079 DEBUG updateSourcesList()
  2021-01-28 16:19:57,088 DEBUG rewriteSourcesList() with mirror_check
  2021-01-28 16:19:57,089 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
  2021-01-28 16:19:57,089 DEBUG Checking pkg: ubuntu-minimal
  2021-01-28 16:19:57,090 DEBUG Checking pkg: ubuntu-standard
  2021-01-28 16:19:57,092 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted'
  2021-01-28 16:19:57,092 DEBUG verifySourcesListEntry: deb http://us.archive.ubuntu.com/ubuntu/ focal main restricted
  2021-01-28 16:19:57,092 DEBUG url_downloadable: http://us.archive.ubuntu.com/ubuntu//dists/focal/Release
  2021-01-28 16:19:57,092 DEBUG s='http' n='us.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
  2021-01-28 16:19:57,114 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
  2021-01-28 16:19:57,114 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
  2021-01-28 16:19:57,114 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
  2021-01-28 16:19:57,114 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic universe'
  2021-01-28 16:19:57,114 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
  2021-01-28 16:19:57,114 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe'
  2021-01-28 16:19:57,114 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
  2021-01-28 16:19:57,114 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic multiverse'
  2021-01-28 16:19:57,115 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
  2021-01-28 16:19:57,115 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
  2021-01-28 16:19:57,115 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
  2021-01-28 16:19:57,115 DEBUG examining: 'deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse'
  2021-01-28 16:19:57,115 DEBUG entry 'deb http://us.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse' updated to new dist
  2021-01-28 16:19:57,115 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu bionic-security main restricted'
  2021-01-28 16:19:57,115 DEBUG verifySourcesListEntry: deb http://security.ubuntu.com/ubuntu focal main restricted
  2021-01-28 16:19:57,115 DEBUG url_downloadable: http://security.ubuntu.com/ubuntu/dists/focal/Release
  2021-01-28 16:19:57,115 DEBUG s='http' n='security.ubuntu.com' p='/ubuntu/dists/focal/Release' q='' f=''
  2021-01-28 16:19:57,134 DEBUG entry 'deb http://security.ubuntu.com/ubuntu focal-security main restricted' updated to new dist
  2021-01-28 16:19:57,134 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu bionic-security universe'
  2021-01-28 16:19:57,134 DEBUG entry 'deb http://security.ubuntu.com/ubuntu focal-security universe' updated to new dist
  2021-01-28 16:19:57,134 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu bionic-security multiverse'
  2021-01-28 16:19:57,135 DEBUG entry 'deb http://security.ubuntu.com/ubuntu focal-security multiverse' updated to new dist
  2021-01-28 16:19:57,138 DEBUG running doUpdate() (showErrors=True)
  2021-01-28 16:20:11,116 DEBUG openCache()
  2021-01-28 16:20:12,073 DEBUG Comparing 5.4.0-54 with
  2021-01-28 16:20:12,074 DEBUG Comparing 5.4.0-58 with 5.4.0-54
  2021-01-28 16:20:12,074 DEBUG Comparing 5.4.0-64 with 5.4.0-58
  2021-01-28 16:20:12,332 DEBUG /openCache(), new cache size 67657
  2021-01-28 16:20:12,332 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
  2021-01-28 16:20:12,333 DEBUG quirks: running PreDistUpgradeCache
  2021-01-28 16:20:12,333 DEBUG running Quirks.PreDistUpgradeCache
  2021-01-28 16:20:12,333 INFO checking for python-dbg
  2021-01-28 16:20:12,333 INFO checking for python-doc
  2021-01-28 16:20:12,333 INFO checking for python-minimal
  2021-01-28 16:20:12,333 INFO installing python-is-python2 because python-minimal was installed
  2021-01-28 16:20:12,333 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
  2021-01-28 16:23:12,303 ERROR Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.'
  2021-01-28 16:23:12,306 DEBUG abort called
  2021-01-28 16:23:12,307 DEBUG openCache()
  2021-01-28 16:23:15,917 DEBUG Comparing 5.4.0-54 with
  2021-01-28 16:23:15,917 DEBUG Comparing 5.4.0-58 with 5.4.0-54
  2021-01-28 16:23:15,917 DEBUG Comparing 5.4.0-64 with 5.4.0-58
  2021-01-28 16:23:16,329 DEBUG /openCache(), new cache size 101660

  and here is apt.log

  Log time: 2021-01-28 16:19:45.851060
  Log time: 2021-01-28 16:20:12.314792
    MarkInstall python-is-python2:amd64 < none -> 2.7.17-4 @un uN Ib > FU=1
    Installing python2 as Depends of python-is-python2
      MarkInstall python2:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
      Installing python2-minimal as PreDepends of python2
        MarkInstall python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
         Removing: python-minimal
          MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
      Installing libpython2-stdlib as Depends of python2
        MarkInstall libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
         Removing: libpython-stdlib
          MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
       Removing: python
        MarkDelete python:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
  Starting pkgProblemResolver with broken count: 1
  Starting 2 pkgProblemResolver with broken count: 1
  Investigating (0) nodejs:amd64 < 14.15.4-1nodesource1 @ii mK Ib >
  Broken nodejs:amd64 Depends on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR >
    Considering python-minimal:amd64 1 as a solution to nodejs:amd64 82
    Added python-minimal:amd64 to the remove list
    Fixing nodejs:amd64 via keep of python-minimal:amd64
    MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Investigating (0) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
  Broken python2-minimal:amd64 Breaks on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
    Considering python-minimal:amd64 1 as a solution to python2-minimal:amd64 1
    MarkKeep python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
    Holding Back python2-minimal:amd64 rather than change python-minimal:amd64
  Investigating (1) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
  Broken python2:amd64 PreDepends on python2-minimal:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
    Considering python2-minimal:amd64 1 as a solution to python2:amd64 1
    MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
    Holding Back python2:amd64 rather than change python2-minimal:amd64
  Investigating (2) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
  Broken python-is-python2:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
    Considering python2:amd64 1 as a solution to python-is-python2:amd64 9999
    Re-Instated python2-minimal:amd64
    Re-Instated python2:amd64
  Investigating (2) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
  Broken python2-minimal:amd64 Breaks on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
    Considering python-minimal:amd64 1 as a solution to python2-minimal:amd64 1
    MarkKeep python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
    Holding Back python2-minimal:amd64 rather than change python-minimal:amd64
  Investigating (3) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
  Broken python2:amd64 PreDepends on python2-minimal:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
    Considering python2-minimal:amd64 1 as a solution to python2:amd64 1
    MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
    Holding Back python2:amd64 rather than change python2-minimal:amd64
  Investigating (4) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
  Broken python-is-python2:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
    Considering python2:amd64 1 as a solution to python-is-python2:amd64 9999
  Done
  Log time: 2021-01-28 16:23:16.315041

  So I had python2 on this machine but it is choking the upgrade.

  I do have python2 on this system:
  $ python2 -V
  Python 2.7.17

  but it seems unremovable:
  sudo apt remove python2 --simulate
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  E: Unable to locate package python2

  FIXED with 'autoremove'

  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 5.4.0-64.72~18.04.1-generic 5.4.78
  Uname: Linux 5.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jan 28 16:22:47 2021
  InstallationDate: Installed on 2020-03-18 (316 days ago)
  InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-01-28 (0 days ago)
  VarLogDistupgradeTermlog:

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